All the leaks.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3919 ed5197a5-7fde-0310-b194-c3ffbd925b24

src/mem.c

@@ -38,7 +38,15 @@ static void* _tf_realloc(int64_t* total, void* ptr, size_t size)
 	{
 		memcpy(&old_size, old_ptr, sizeof(size_t));
 	}
-	void* new_ptr = realloc(old_ptr, size ? size + sizeof(size_t) : 0);
+	void* new_ptr = NULL;
+	if (old_ptr && !size)
+	{
+		free(old_ptr);
+	}
+	else
+	{
+		new_ptr = realloc(old_ptr, size + sizeof(size_t));
+	}
 	if (new_ptr)
 	{
 		__atomic_add_fetch(total, (int64_t)size - (int64_t)old_size, __ATOMIC_RELAXED);