added missign zlib sigs

stdlib/zlib/0/buf_error.rbs

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+# <!-- rdoc-file=ext/zlib/zlib.c -->
+# This module provides access to the [zlib library](http://zlib.net). Zlib is
+# designed to be a portable, free, general-purpose, legally unencumbered -- that
+# is, not covered by any patents -- lossless data-compression library for use on
+# virtually any computer hardware and operating system.
+#
+# The zlib compression library provides in-memory compression and decompression
+# functions, including integrity checks of the uncompressed data.
+#
+# The zlib compressed data format is described in RFC 1950, which is a wrapper
+# around a deflate stream which is described in RFC 1951.
+#
+# The library also supports reading and writing files in gzip (.gz) format with
+# an interface similar to that of IO. The gzip format is described in RFC 1952
+# which is also a wrapper around a deflate stream.
+#
+# The zlib format was designed to be compact and fast for use in memory and on
+# communications channels. The gzip format was designed for single-file
+# compression on file systems, has a larger header than zlib to maintain
+# directory information, and uses a different, slower check method than zlib.
+#
+# See your system's zlib.h for further information about zlib
+#
+# ## Sample usage
+#
+# Using the wrapper to compress strings with default parameters is quite simple:
+#
+#     require "zlib"
+#
+#     data_to_compress = File.read("don_quixote.txt")
+#
+#     puts "Input size: #{data_to_compress.size}"
+#     #=> Input size: 2347740
+#
+#     data_compressed = Zlib::Deflate.deflate(data_to_compress)
+#
+#     puts "Compressed size: #{data_compressed.size}"
+#     #=> Compressed size: 887238
+#
+#     uncompressed_data = Zlib::Inflate.inflate(data_compressed)
+#
+#     puts "Uncompressed data is: #{uncompressed_data}"
+#     #=> Uncompressed data is: The Project Gutenberg EBook of Don Quixote...
+#
+# ## Class tree
+#
+# *   Zlib::Deflate
+# *   Zlib::Inflate
+# *   Zlib::ZStream
+# *   Zlib::Error
+#     *   Zlib::StreamEnd
+#     *   Zlib::NeedDict
+#     *   Zlib::DataError
+#     *   Zlib::StreamError
+#     *   Zlib::MemError
+#     *   Zlib::BufError
+#     *   Zlib::VersionError
+#     *   Zlib::InProgressError
+#
+#
+#
+# (if you have GZIP_SUPPORT)
+# *   Zlib::GzipReader
+# *   Zlib::GzipWriter
+# *   Zlib::GzipFile
+# *   Zlib::GzipFile::Error
+#     *   Zlib::GzipFile::LengthError
+#     *   Zlib::GzipFile::CRCError
+#     *   Zlib::GzipFile::NoFooter
+#
+module Zlib
+  # <!-- rdoc-file=ext/zlib/zlib.c -->
+  # Subclass of Zlib::Error when zlib returns a Z_BUF_ERROR.
+  #
+  # Usually if no progress is possible.
+  #
+  class BufError < Zlib::Error
+  end
+end

stdlib/zlib/0/data_error.rbs

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+# <!-- rdoc-file=ext/zlib/zlib.c -->
+# This module provides access to the [zlib library](http://zlib.net). Zlib is
+# designed to be a portable, free, general-purpose, legally unencumbered -- that
+# is, not covered by any patents -- lossless data-compression library for use on
+# virtually any computer hardware and operating system.
+#
+# The zlib compression library provides in-memory compression and decompression
+# functions, including integrity checks of the uncompressed data.
+#
+# The zlib compressed data format is described in RFC 1950, which is a wrapper
+# around a deflate stream which is described in RFC 1951.
+#
+# The library also supports reading and writing files in gzip (.gz) format with
+# an interface similar to that of IO. The gzip format is described in RFC 1952
+# which is also a wrapper around a deflate stream.
+#
+# The zlib format was designed to be compact and fast for use in memory and on
+# communications channels. The gzip format was designed for single-file
+# compression on file systems, has a larger header than zlib to maintain
+# directory information, and uses a different, slower check method than zlib.
+#
+# See your system's zlib.h for further information about zlib
+#
+# ## Sample usage
+#
+# Using the wrapper to compress strings with default parameters is quite simple:
+#
+#     require "zlib"
+#
+#     data_to_compress = File.read("don_quixote.txt")
+#
+#     puts "Input size: #{data_to_compress.size}"
+#     #=> Input size: 2347740
+#
+#     data_compressed = Zlib::Deflate.deflate(data_to_compress)
+#
+#     puts "Compressed size: #{data_compressed.size}"
+#     #=> Compressed size: 887238
+#
+#     uncompressed_data = Zlib::Inflate.inflate(data_compressed)
+#
+#     puts "Uncompressed data is: #{uncompressed_data}"
+#     #=> Uncompressed data is: The Project Gutenberg EBook of Don Quixote...
+#
+# ## Class tree
+#
+# *   Zlib::Deflate
+# *   Zlib::Inflate
+# *   Zlib::ZStream
+# *   Zlib::Error
+#     *   Zlib::StreamEnd
+#     *   Zlib::NeedDict
+#     *   Zlib::DataError
+#     *   Zlib::StreamError
+#     *   Zlib::MemError
+#     *   Zlib::BufError
+#     *   Zlib::VersionError
+#     *   Zlib::InProgressError
+#
+#
+#
+# (if you have GZIP_SUPPORT)
+# *   Zlib::GzipReader
+# *   Zlib::GzipWriter
+# *   Zlib::GzipFile
+# *   Zlib::GzipFile::Error
+#     *   Zlib::GzipFile::LengthError
+#     *   Zlib::GzipFile::CRCError
+#     *   Zlib::GzipFile::NoFooter
+#
+module Zlib
+  # <!-- rdoc-file=ext/zlib/zlib.c -->
+  # Subclass of Zlib::Error when zlib returns a Z_DATA_ERROR.
+  #
+  # Usually if a stream was prematurely freed.
+  #
+  class DataError < Zlib::Error
+  end
+end