sfeed_update: suppress output to stderr, like merge() already does

Noticed while testing TMPDIR=/noaccess sort on Illumos/OpenIndiana, which gives
a warning to stderr. For sort temporary directories might be used for large
output.

1 files changed, 1 insertions, 1 deletions

diff --git a/sfeed_update b/sfeed_update
index 94b64df..85cd759 100755
--- a/sfeed_update
+++ b/sfeed_update
@@ -85,7 +85,7 @@ merge() {
 # order by timestamp (descending).
 # order(name, url)
 order() {
-	sort -t '	' -k1rn,1
+	sort -t '	' -k1rn,1 2>/dev/null
 }
 
 # internal handler to fetch and process a feed.