* .gdbinit (iseq): rename dummy_gdb_enums to ruby_dummy_gdb_enums.

This is follow up to changes in r24407.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39283 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

.gdbinit

@@ -737,7 +737,7 @@ define rb_backtrace
 end
 
 define iseq
-  if dummy_gdb_enums.special_consts
+  if ruby_dummy_gdb_enums.special_consts
   end
   if ($arg0)->type == ISEQ_ELEMENT_NONE
     echo [none]\n