fix: Pass array, not array pointer, to memcmp.

The types were incompatible.

Author: iphydf

toxcore/group_announce.c

@@ -78,15 +78,15 @@ int gca_get_announces(const GC_Announces_List *gc_announces_list, GC_Announce *g
     for (size_t i = 0; i < announces->index && i < GCA_MAX_SAVED_ANNOUNCES_PER_GC && added_count < max_nodes; ++i) {
         const size_t index = i % GCA_MAX_SAVED_ANNOUNCES_PER_GC;
 
-        if (memcmp(except_public_key, &announces->peer_announces[index].base_announce.peer_public_key,
+        if (memcmp(except_public_key, announces->peer_announces[index].base_announce.peer_public_key,
                    ENC_PUBLIC_KEY_SIZE) == 0) {
             continue;
         }
 
         bool already_added = false;
 
         for (size_t j = 0; j < added_count; ++j) {
-            if (memcmp(&gc_announces[j].peer_public_key, &announces->peer_announces[index].base_announce.peer_public_key,
+            if (memcmp(gc_announces[j].peer_public_key, announces->peer_announces[index].base_announce.peer_public_key,
                        ENC_PUBLIC_KEY_SIZE) == 0) {
                 already_added = true;
                 break;