[patch] fix comment before add_to_renaming_pragma_list

[Steven Bosscher]

Committed, obvious.

        * c-pragma.c (add_to_renaming_pragma_list): Fix leading comment.

Index: c-pragma.c
===================================================================
--- c-pragma.c  (revision 197552)
+++ c-pragma.c  (working copy)
@@ -478,7 +478,7 @@ handle_pragma_redefine_extname (cpp_read
     add_to_renaming_pragma_list (oldname, newname);
 }

-/* This is called from here and from ia64.c.  */
+/* This is called from here and from ia64-c.c.  */
 void
 add_to_renaming_pragma_list (tree oldname, tree newname)
 {