freebsd-pkg: Check if getting version list succeeds

Author: taoky

freebsd-pkg/sync.sh

@@ -79,6 +79,10 @@ curl_init
 
 echo "[INFO] getting version list..."
 $CURL_WRAP -sSL $FBSD_PKG_UPSTREAM | grep -oP 'FreeBSD:[0-9]+:[a-z0-9]+' | grep -vP $FBSD_PKG_EXCLUDE | sort -t : -rnk 2 | uniq | tee $FBSD_PLATFORMS
+if [[ ${PIPESTATUS[0]} -ne 0 ]]; then
+	echo "[FATAL] get version list from $FBSD_PKG_UPSTREAM failed."
+	return 1
+fi
 
 while read platform; do
 	for channel in latest quarterly; do