Renamed SDL_size_add_overflow() and SDL_size_mul_overflow()

src/SDL_assert.c

@@ -175,7 +175,7 @@ static SDL_AssertState SDLCALL SDL_PromptAssertion(const SDL_AssertData *data, v
 
     // .. and if it didn't, try to allocate as much room as we actually need.
     if (len >= (int)buf_len) {
-        if (SDL_size_add_overflow(len, 1, &buf_len) == 0) {
+        if (SDL_size_add_check_overflow(len, 1, &buf_len)) {
             message = (char *)SDL_malloc(buf_len);
             if (message) {
                 len = SDL_RenderAssertMessage(message, buf_len, data);