defined why2_calloc & why2_free

same thing as why2_malloc

src/core/lib/utils/memory.c

@@ -7,4 +7,18 @@ void *why2_malloc(unsigned long size)
     //TODO: Add linked list
 
     return malloc(size);
+}
+
+void *why2_calloc(unsigned long element, unsigned long size)
+{
+    //TODO: Add linked list
+
+    return calloc(element, size);
+}
+
+void why2_free(void *pointer)
+{
+    //TODO: Add linked list
+
+    free(pointer);
 }