Little fixes

Author: UgurKap

HW3/cmake-build-debug/CMakeFiles/HW3.dir/main.cpp.o

@@ -368,7 +368,7 @@ void RBTree::DeleteFix(Node *node, bool rep) {
         }
     }
 
-    node->isRed = false;
+    if (node) node->isRed = false;
 }
 
 void RBTree::InOrderWalk(Node *node) {
@@ -415,5 +415,9 @@ int main() {
     tree.Delete(arr[11]);
     tree.InOrderWalk(tree.root);
 
+    for(int i = 0; i < 15; i++){
+        delete arr[i];
+    }
+
     return 0;
 }