[SDL2] pointer boolean (#8523)

src/filesystem/winrt/SDL_sysfilesystem.cpp

@@ -111,7 +111,7 @@ SDL_WinRTGetFSPathUTF8(SDL_WinRT_Path pathType)
     }
 
     const wchar_t *ucs2Path = SDL_WinRTGetFSPathUNICODE(pathType);
-    if (ucs2Path == NULL) {
+    if (!ucs2Path) {
         return NULL;
     }
 
@@ -128,14 +128,14 @@ SDL_GetBasePath(void)
     size_t destPathLen;
     char *destPath = NULL;
 
-    if (srcPath == NULL) {
+    if (!srcPath) {
         SDL_SetError("Couldn't locate our basepath: %s", SDL_GetError());
         return NULL;
     }
 
     destPathLen = SDL_strlen(srcPath) + 2;
     destPath = (char *)SDL_malloc(destPathLen);
-    if (destPath == NULL) {
+    if (!destPath) {
         SDL_OutOfMemory();
         return NULL;
     }
@@ -161,16 +161,16 @@ SDL_GetPrefPath(const char *org, const char *app)
     size_t new_wpath_len = 0;
     BOOL api_result = FALSE;
 
-    if (app == NULL) {
+    if (!app) {
         SDL_InvalidParamError("app");
         return NULL;
     }
-    if (org == NULL) {
+    if (!org) {
         org = "";
     }
 
     srcPath = SDL_WinRTGetFSPathUNICODE(SDL_WINRT_PATH_LOCAL_FOLDER);
-    if (srcPath == NULL) {
+    if (!srcPath) {
         SDL_SetError("Unable to find a source path");
         return NULL;
     }
@@ -182,13 +182,13 @@ SDL_GetPrefPath(const char *org, const char *app)
     SDL_wcslcpy(path, srcPath, SDL_arraysize(path));
 
     worg = WIN_UTF8ToString(org);
-    if (worg == NULL) {
+    if (!worg) {
         SDL_OutOfMemory();
         return NULL;
     }
 
     wapp = WIN_UTF8ToString(app);
-    if (wapp == NULL) {
+    if (!wapp) {
         SDL_free(worg);
         SDL_OutOfMemory();
         return NULL;