Add missing gzip footer check in ActiveSupport::Gzip.decompress

A gzip file has a checksum and length for the decompressed data in its
footer which isn't checked by just calling Zlib::GzipReader#read.
Calling Zlib::GzipReader#close must be called after reading to the end
of the file causes this check to be done, which is done by
Zlib::GzipReader.wrap after its block is called.

1 files changed, 1 insertions, 1 deletions

diff --git a/activesupport/lib/active_support/gzip.rb b/activesupport/lib/active_support/gzip.rb
index 84eef6a623..95a86889ec 100644
--- a/activesupport/lib/active_support/gzip.rb
+++ b/activesupport/lib/active_support/gzip.rb
@@ -21,7 +21,7 @@ module ActiveSupport
 
     # Decompresses a gzipped string.
     def self.decompress(source)
-      Zlib::GzipReader.new(StringIO.new(source)).read
+      Zlib::GzipReader.wrap(StringIO.new(source), &:read)
     end
 
     # Compresses a string using gzip.