Index: main/pbx.c
===================================================================
--- main/pbx.c	(revision 88184)
+++ main/pbx.c	(working copy)
@@ -2660,7 +2660,7 @@
 		if (c->cdr && ast_opt_end_cdr_before_h_exten)
 			ast_cdr_end(c->cdr);
 		set_ext_pri(c, "h", 1);
-		while ((res = ast_spawn_extension(c, c->context, c->exten, c->priority, c->cid.cid_num, &found,1))) {
+		while ((res = ast_spawn_extension(c, c->context, c->exten, c->priority, c->cid.cid_num, &found, 1)) == 0) {
 			c->priority++;
 		}
 		if (found && res) {