Fix a double-free in qemudRunLoop()

Signed-off-by: NChris Lalancette <clalance@redhat.com>

daemon/libvirtd.c

@@ -2270,7 +2270,6 @@ cleanup:
     }
     VIR_FREE(server->workers);
 
-    free(server->workers);
     virMutexUnlock(&server->lock);
     return ret;
 }