#3237 sp_BlitzFirst Remove @@rowcount

To prevent startup problems with Hekaton. Closes #3237.

Author: BrentOzar

sp_BlitzFirst.sql

@@ -3146,7 +3146,7 @@ If one of them is a lead blocker, consider killing that query.'' AS HowToStopit,
 
 	/* Check for temp objects with high forwarded fetches.
 		This has to be done as dynamic SQL because we have to execute OBJECT_NAME inside TempDB. */
-	IF @@ROWCOUNT > 0
+	IF EXISTS (SELECT * FROM #BlitzFirstResults WHERE CheckID = 29)
 		BEGIN
 		SET @StringToExecute = N'
 		INSERT INTO #BlitzFirstResults (CheckID, Priority, FindingsGroup, Finding, URL, Details, HowToStopIt)