changed screen saver client name

Author: mariotaku

src/core/webos/SDL_webos_init.c

@@ -70,6 +70,9 @@ int SDL_webOSRegisterApp()
     }
     if (SDL_GetHintBoolean(SDL_HINT_WEBOS_REGISTER_APP, SDL_TRUE)) {
         const char *appId = SDL_getenv("APPID");
+        if (appId == NULL) {
+            return SDL_SetError("APPID environment variable is not set");
+        }
         s_nativeLifeCycleInterfaceVersion = getNativeLifeCycleInterfaceVersion(appId);
         if (s_nativeLifeCycleInterfaceVersion == -1) {
             char errbuf[1024];
@@ -242,8 +245,7 @@ static SDL_bool registerScreenSaverRequest(const char *appId)
     char *client_name;
     SDL_bool result;
 
-    client_name = SDL_malloc(64);
-    SDL_snprintf(client_name, 64, "%s.wakelock", appId);
+    client_name = SDL_strdup(appId);
     payload = PBNJSON_jobject_create_var(
         PBNJSON_jkeyval(J_CSTR_TO_JVAL("subscribe"), PBNJSON_jboolean_create(1)),
         PBNJSON_jkeyval(J_CSTR_TO_JVAL("clientName"), PBNJSON_j_cstr_to_jval(client_name)),