fix position of TR_TREE_FIND call

@@ -30,8 +30,6 @@ TR_treeInsert(TR_Tree * this, const void * search, TR_TreeComp comp)
 	TR_Tree new_node = NULL;
 	int     found;
 
-	TR_TREE_FIND(node, search, found, comp);
-
 	/*
 	 * insert the node or return the one in tree if comparison
 	 * succeeds.
@@ -43,6 +41,8 @@ TR_treeInsert(TR_Tree * this, const void * search, TR_TreeComp comp)
 		 */
 		*this = node = new_node = TR_new(TR_Tree, search);
 	} else {
+		TR_TREE_FIND(node, search, found, comp);
+
 		if (found == 0) {
 			// we found an element
 			// as this is insert and not find this will overwrite an existing