Fix default hash assertion

Author: jappeace

tests/Regressions.hs

@@ -144,8 +144,13 @@ assertDefaultHash = do
   -- appear to be set, we get the warning, yet the
   -- larger value in upstream is still being used.
   -- https://github.com/haskell-unordered-containers/hashable/blob/master/src/Data/Hashable/Class.hs#L221
+#if MIN_VERSION_hashable(1,3,1)
+  HAS.hash someString  @=?
+    HAS.hashWithSalt 14695981039346656037 someString
+#else
   HAS.hash someString  @=?
     HAS.hashWithSalt 0xdc36d1615b7400a4 someString
+#endif
 
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 -- * Test list