On LLP64 platform (mswin64), the return value of String#hash is fixnum.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58684 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/rubyspec/optional/capi/ext/string_spec.c

@@ -362,10 +362,8 @@ VALUE string_spec_StringValue(VALUE self, VALUE str) {
 static VALUE string_spec_rb_str_hash(VALUE self, VALUE str) {
   st_index_t val = rb_str_hash(str);
 
-#if SIZEOF_LONG == SIZEOF_VOIDP
+#if SIZEOF_LONG == SIZEOF_VOIDP || SIZEOF_LONG_LONG == SIZEOF_VOIDP
   return LONG2FIX((long)val);
-#elif SIZEOF_LONG_LONG == SIZEOF_VOIDP
-  return LL2NUM((LONG_LONG)val);
 #else
 # error unsupported platform
 #endif