Fix error handling in createList

Change-Id: I10211f2a20da119ae6a4a1bb2f768a3fa2ab87da
diff --git a/twrpTar.cpp b/twrpTar.cpp
index cc09b78..a31fe12 100644
--- a/twrpTar.cpp
+++ b/twrpTar.cpp
@@ -621,7 +621,7 @@
 void* twrpTar::createList(void *cookie) {
 
 	twrpTar* threadTar = (twrpTar*) cookie;
-	if (threadTar->tarList(threadTar->ItemList, threadTar->thread_id) == -1) {
+	if (threadTar->tarList(threadTar->ItemList, threadTar->thread_id) != 0) {
 		LOGINFO("ERROR tarList for thread ID %i\n", threadTar->thread_id);
 		return (void*)-2;
 	}