zeroconf: avoid passing NULLs to Avahi *_free() routines

This should fix Debian bug #428551 (mpd crashes when restarting the dbus daemon) git-svn-id: https://svn.musicpd.org/mpd/trunk@6844 09075e82-0dd4-0310-85a5-a0d7c8717e4f

zeroconf: avoid passing NULLs to Avahi *_free() routines
203a5ed2 · Eric Wong · bbe8b0ef · 203a5ed2
Commit 203a5ed2 authored Sep 02, 2007 by Eric Wong
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Showing with 6 additions and 4 deletions

zeroconf.c src/zeroconf.c +6 -4

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--- a/src/zeroconf.c
+++ b/src/zeroconf.c
@@ -309,10 +309,12 @@ static void avahiClientCallback(AvahiClient *c, AvahiClientState state, void *us
 				int reason = avahi_client_errno(c);
 				if( reason == AVAHI_ERR_DISCONNECTED ) {
 					LOG( "Avahi: Client Disconnected, will reconnect shortly\n");
-					avahi_entry_group_free( avahiGroup );
-					avahiGroup = NULL;
-					avahi_client_free( avahiClient );
-					avahiClient = NULL;
+					if (avahiGroup) {
+						avahi_entry_group_free(avahiGroup);
+						avahiGroup = NULL;
+					}
+					if (avahiClient)
+						avahi_client_free(avahiClient);
 					avahiClient = avahi_client_new( &avahiPoll, AVAHI_CLIENT_NO_FAIL,
 						avahiClientCallback, NULL, &reason );
 					if( !avahiClient ) {