Make the extra tests work with older ghc

dcoutts · dcoutts · commit c1a301448740 · 2015-04-19T23:39:49.000Z
diff --git a/zlib.cabal b/zlib.cabal
@@ -42,6 +42,7 @@ library
   other-modules:   Codec.Compression.Zlib.Stream
   if impl(ghc < 7)
     default-language: Haskell98
+    default-extensions: PatternGuards
   else
     default-language: Haskell2010
   other-extensions: CPP, ForeignFunctionInterface, RankNTypes, BangPatterns,
