[ADD/MOD] XMPP->Matrix media bridge, small cleanup

src/XML/Elements.c

@@ -131,3 +131,26 @@ XMLookForUnique(XMLElement *parent, char *tag)
 
     return NULL;
 }
+XMLElement *
+XMLookForTKV(XMLElement *parent, char *tag, char *k, char *v)
+{
+    size_t i;
+
+    if (!parent || !tag || !k || !v)
+    {
+        return NULL;
+    }
+
+    for (i = 0; i < ArraySize(parent->children); i++)
+    {
+        XMLElement *child = ArrayGet(parent->children, i);
+        HashMap *attrs = child->attrs;
+        char *value = HashMapGet(attrs, k);
+        if (StrEquals(child->name, tag) && StrEquals(value, v))
+        {
+            return child;
+        }
+    }
+
+    return NULL;
+}