fix mem leak (bug #4318)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/v1-0@5794 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_queue.c

@@ -861,21 +861,30 @@ static struct localuser *wait_for_answer(struct queue_ent *qe, struct localuser
 			if (!f || ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_HANGUP))) {
 				/* Got hung up */
 				*to=-1;
+				if (f)
+					ast_frfree(f);
 				return NULL;
 			}
-			if (f && (f->frametype == AST_FRAME_DTMF) && allowdisconnect_out && (f->subclass == '*')) {
+			if ((f->frametype == AST_FRAME_DTMF) && allowdisconnect_out && (f->subclass == '*')) {
 			    if (option_verbose > 3)
 					ast_verbose(VERBOSE_PREFIX_3 "User hit %c to disconnect call.\n", f->subclass);
 				*to=0;
+				if (f)
+					ast_frfree(f);	
 				return NULL;
 			}
-			if (f && (f->frametype == AST_FRAME_DTMF) && (f->subclass != '*') && valid_exit(qe, f->subclass)) {
+			if ((f->frametype == AST_FRAME_DTMF) && (f->subclass != '*') && valid_exit(qe, f->subclass)) {
 				if (option_verbose > 3)
 					ast_verbose(VERBOSE_PREFIX_3 "User pressed digit: %c\n", f->subclass);
 				*to=0;
 				*digit=f->subclass;
+				if (f)
+					ast_frfree(f);
 				return NULL;
 			}
+			if (f)
+				ast_frfree(f);
+			
 		}
 		if (!*to && (option_verbose > 2))
 			ast_verbose( VERBOSE_PREFIX_3 "Nobody picked up in %d ms\n", orig);