http-push: fix check condition on http.c::finish_http_pack_request()

Check that http.c::finish_http_pack_request() returns 0 (for success).

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

http-push.c

@@ -604,7 +604,7 @@ static void finish_request(struct transfer_request *request)
 			preq = (struct http_pack_request *)request->userData;
 
 			if (preq) {
-				if (finish_http_pack_request(preq) > 0)
+				if (finish_http_pack_request(preq) == 0)
 					fail = 0;
 				release_http_pack_request(preq);
 			}