Emscripten: use UTF8ToString instead of Pointer_stringify

src/SDL_assert.c

@@ -250,7 +250,7 @@ SDL_PromptAssertion(const SDL_assert_data *data, void *userdata)
             SDL_bool okay = SDL_TRUE;
             char *buf = (char *) EM_ASM_INT({
                 var str =
-                    Pointer_stringify($0) + '\n\n' +
+                    UTF8ToString($0) + '\n\n' +
                     'Abort/Retry/Ignore/AlwaysIgnore? [ariA] :';
                 var reply = window.prompt(str, "i");
                 if (reply === null) {

src/video/emscripten/SDL_emscriptenmouse.c

@@ -210,7 +210,7 @@ Emscripten_ShowCursor(SDL_Cursor* cursor)
             if(curdata->system_cursor) {
                 EM_ASM_INT({
                     if (Module['canvas']) {
-                        Module['canvas'].style['cursor'] = Module['Pointer_stringify']($0);
+                        Module['canvas'].style['cursor'] = UTF8ToString($0);
                     }
                     return 0;
                 }, curdata->system_cursor);

src/video/emscripten/SDL_emscriptenvideo.c

@@ -344,7 +344,7 @@ static void
 Emscripten_SetWindowTitle(_THIS, SDL_Window * window) {
     EM_ASM_INT({
       if (typeof Module['setWindowTitle'] !== 'undefined') {
-        Module['setWindowTitle'](Module['Pointer_stringify']($0));
+        Module['setWindowTitle'](UTF8ToString($0));
       }
       return 0;
     }, window->title);