[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Tests/test_file_fli.py

@@ -37,6 +37,7 @@ def test_unclosed_file():
         im.load()
         del im
 
+
 def test_closed_file():
     with warnings.catch_warnings():
         im = Image.open(static_test_file)