Updated for SDL3 change to use SDL_bool instead of int return code

cmake/test/main.c

@@ -4,7 +4,7 @@
 
 int main(int argc, char *argv[])
 {
-    if (SDL_Init(0) < 0) {
+    if (!SDL_Init(0)) {
         SDL_Log("SDL_Init: could not initialize SDL: %s\n", SDL_GetError());
         return 1;
     }