Avoid emitting locals duiring keyword typemap lookup

Author: sethrj

Source/Swig/typemap.c

@@ -2107,8 +2107,9 @@ static void replace_embedded_typemap(String *s, ParmList *parm_sublist, Wrapper
 	    }
 	    found_colon = Strchr(tmap_method, ':');
 	    if (found_colon) {
+	      /* Substitute from a keyword argument to a typemap. Avoid emitting local variables from the attached typemap by passing NULL for the file. */
 	      String *temp_tmap_method = NewStringWithSize(Char(tmap_method), found_colon - Char(tmap_method));
-	      Swig_typemap_attach_parms(temp_tmap_method, to_match_parms, f);
+	      Swig_typemap_attach_parms(temp_tmap_method, to_match_parms, NULL);
 	      Delete(temp_tmap_method);
 	    } else {
 	      Swig_typemap_attach_parms(tmap_method, to_match_parms, f);