fix(ui,db): harden NULL handling, fix CWE-134, optimize iterations

security(CWE-134): fix format string injections + add CI check
fix(ui): subwindow lifecycle, newwin/newpad guards, fallback timestamps
fix(db): sqlite cleanup on failures, sqlite3_close_v2
fix(xmpp): queued_messages loop, barejid leak
perf(core): g_hash_table_iter_init instead of g_hash_table_get_keys
refactor(ui): CLAMP macro in _check_subwin_width
test: XEP-0012 and XEP-0045 functional tests

Author: jabber.developer2
Closes #58, #85

src/pgp/gpg.c

@@ -345,14 +345,13 @@ p_gpg_list_keys(void)
 
     // TODO: move autocomplete in other place
     autocomplete_clear(key_ac);
-    GList* ids = g_hash_table_get_keys(result);
-    GList* curr = ids;
-    while (curr) {
-        ProfPGPKey* key = g_hash_table_lookup(result, curr->data);
-        autocomplete_add(key_ac, key->id);
-        curr = curr->next;
+    GHashTableIter iter;
+    gpointer key, value;
+    g_hash_table_iter_init(&iter, result);
+    while (g_hash_table_iter_next(&iter, &key, &value)) {
+        ProfPGPKey* pgp_key = (ProfPGPKey*)value;
+        autocomplete_add(key_ac, pgp_key->id);
     }
-    g_list_free(ids);
 
     return result;
 }