Pointer as bool (libsdl-org#7214)

test/testaudiohotplug.c

@@ -72,7 +72,7 @@ static void iteration(void)
             const SDL_AudioDeviceID which = (SDL_AudioDeviceID) e.adevice.which;
             const SDL_bool iscapture = e.adevice.iscapture ? SDL_TRUE : SDL_FALSE;
             char *name = SDL_GetAudioDeviceName(which);
-            if (name != NULL) {
+            if (name) {
                 SDL_Log("New %s audio device at id %u: %s", devtypestr(iscapture), (unsigned int)which, name);
             } else {
                 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Got new %s device, id %u, but failed to get the name: %s",
@@ -119,7 +119,7 @@ int main(int argc, char *argv[])
 
     /* Initialize test framework */
     state = SDLTest_CommonCreateState(argv, 0);
-    if (state == NULL) {
+    if (!state) {
         return 1;
     }
 
@@ -154,7 +154,7 @@ int main(int argc, char *argv[])
 
     /* Some targets (Mac CoreAudio) need an event queue for audio hotplug, so make and immediately hide a window. */
     window = SDL_CreateWindow("testaudiohotplug", 640, 480, 0);
-    if (window == NULL) {
+    if (!window) {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_CreateWindow failed: %s\n", SDL_GetError());
         quit(1);
     }
@@ -162,7 +162,7 @@ int main(int argc, char *argv[])
 
     filename = GetResourceFilename(filename, "sample.wav");
 
-    if (filename == NULL) {
+    if (!filename) {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "%s\n", SDL_GetError());
         quit(1);
     }