[SDL2] pointer boolean (#8523)

test/testsprite2.c

@@ -453,7 +453,7 @@ int main(int argc, char *argv[])
 
     /* Initialize test framework */
     state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
-    if (state == NULL) {
+    if (!state) {
         return 1;
     }
 
@@ -541,7 +541,7 @@ int main(int argc, char *argv[])
     /* Create the windows, initialize the renderers, and load the textures */
     sprites =
         (SDL_Texture **)SDL_malloc(state->num_windows * sizeof(*sprites));
-    if (sprites == NULL) {
+    if (!sprites) {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory!\n");
         quit(2);
     }
@@ -557,7 +557,7 @@ int main(int argc, char *argv[])
     /* Allocate memory for the sprite info */
     positions = (SDL_Rect *)SDL_malloc(num_sprites * sizeof(SDL_Rect));
     velocities = (SDL_Rect *)SDL_malloc(num_sprites * sizeof(SDL_Rect));
-    if (positions == NULL || velocities == NULL) {
+    if (!positions || !velocities) {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory!\n");
         quit(2);
     }