Added return of node_init

exercises/03/vslc/src/tree.c

@@ -73,8 +73,8 @@ print_syntax_tree ( void )
     //tree_print(root, 0);
 }
 
-
-void
+// Changed so it returns the pointer to the new node, can be used as before, but makes the parser file cleaner
+node_t*
 node_init (node_t *nd, node_index_t type, void *data, uint64_t n_children, ...)
 {
     va_list child_list;
@@ -89,6 +89,8 @@ node_init (node_t *nd, node_index_t type, void *data, uint64_t n_children, ...)
     for ( uint64_t i=0; i<n_children; i++ )
         nd->children[i] = va_arg ( child_list, node_t * );
     va_end ( child_list );
+
+    return nd;
 }