* include/ruby/ruby.h (rb_special_const_p): fixed typo.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24889 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

include/ruby/ruby.h

@@ -1270,7 +1270,7 @@ rb_type(VALUE obj)
 
 #ifdef __GNUC__
 #define rb_special_const_p(obj) \
-    __extension__ ({VALUE special_const_obj = (obj); (int)(SPECIAL_CONST_P(obj) ? Qtrue : Qfalse);})
+    __extension__ ({VALUE special_const_obj = (obj); (int)(SPECIAL_CONST_P(special_const_obj) ? Qtrue : Qfalse);})
 #else
 static inline int
 rb_special_const_p(VALUE obj)