Check for NULL before strcmp.

eclipse · Oct 24, 2021 · 9e5b850 · 9e5b850
1 parent 7b614b3
commit 9e5b850
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/database.c b/src/database.c
@@ -453,7 +453,7 @@ int db__message_insert(struct mosquitto *context, uint16_t mid, enum mosquitto_m
  && dir == mosq_md_out && retain == false && stored->dest_ids){
 
  for(i=0; i<stored->dest_id_count; i++){
- if(!strcmp(stored->dest_ids[i], context->id)){
+ if(stored->dest_ids[i] && !strcmp(stored->dest_ids[i], context->id)){
  /* We have already sent this message to this client. */
  mosquitto_property_free_all(&properties);
  return MOSQ_ERR_SUCCESS;