try fix 1

Author: vszakats

_info-bin.sh

@@ -73,7 +73,11 @@ while [ -n "${1:-}" ]; do
     if [ "${is_curl}" = '1' ] && [ "${filetype}" != 'exe' ]; then  # Verify exported curl symbols
       "${NM}" --extern-only --defined-only "${f}"  # -g -U
       "${NM}" --extern-only --defined-only "${f}" | grep -a -F ' _curl_' | sort || false  # -g -U
-      "${NM}" --extern-only --defined-only "${f}" | grep -a -F -v ' T _curl_' && false  # should not export anything else except the libcurl API
+      # should not export anything else except the libcurl API
+      if ! "${NM}" --extern-only --defined-only "${f}" | grep -a -F -v ' T _curl_'; then
+        echo "! '${f}' exports non-curl symbols."
+        exit 1
+      fi
     fi
   elif [ "${_OS}" = 'linux' ]; then
     # NOTE: objdump -syms (-t) to show symbol visibility flags