X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fcups.git;a=blobdiff_plain;f=scheduler%2Fdirsvc.c;fp=scheduler%2Fdirsvc.c;h=2308e05384bc90552a505590914ce876789b0c6c;hp=6f6aa8bb446dc38f1ccbd416e39b2ad3771fdfd3;hb=b337f966e85ec2ae65769ee6bab12f78edcfafa5;hpb=e9b2d701dae26930a356408ada2c4f7eacc59100

diff --git a/scheduler/dirsvc.c b/scheduler/dirsvc.c
index 6f6aa8bb4..2308e0538 100644
--- a/scheduler/dirsvc.c
+++ b/scheduler/dirsvc.c
@@ -699,13 +699,16 @@ dnssdDeregisterInstance(
   DNSServiceRefDeallocate(*srv);
 
 #  else /* HAVE_AVAHI */
-  if (!from_callback)
-    avahi_threaded_poll_lock(DNSSDMaster);
+  if (*srv)
+  {
+    if (!from_callback)
+      avahi_threaded_poll_lock(DNSSDMaster);
 
-  avahi_entry_group_free(*srv);
+    avahi_entry_group_free(*srv);
 
-  if (!from_callback)
-    avahi_threaded_poll_unlock(DNSSDMaster);
+    if (!from_callback)
+      avahi_threaded_poll_unlock(DNSSDMaster);
+  }
 #  endif /* HAVE_DNSSD */
 
   *srv = NULL;