1 files changed, 2 insertions, 2 deletions

diff --git a/avl.c b/avl.c
index 13a3d5f..0dfe6ca 100644
--- a/avl.c
+++ b/avl.c
@@ -34,7 +34,7 @@ insert_r(T x, struct tree_node *p, bool *h)
                 *h = true;
 
                 p = malloc(sizeof *p);
-                if ( p != NULL ) {
+                if ( p ) {
                         p->left = NULL;
                         p->right = NULL;
                         p->bal = 0;
@@ -215,7 +215,7 @@ balanceR(struct tree_node *p, bool *h)
 static void
 del(struct tree_node **q, struct tree_node **r, bool *h)
 {
-        if ( (*r)->right != NULL ) {
+        if ( (*r)->right ) {
                 del(q, &(*r)->right, h);
                 if ( *h ) 
                         *r = balanceR(*r, h);