End a request quietly when the client has gone

A write that failed with EPIPE on an uncached page died into an error
page, which died again at exit when the page could not be sent either,
and git logged a recursion warning on every dropped connection. A
filter that exits early fails a write the same way, so the quiet exit
is kept for writes that reach the client itself.

1 file changed, 2 insertions, 1 deletion

diff --git a/source/cache.c b/source/cache.c
index 8c81f5c..62bb623 100644
--- a/source/cache.c
+++ b/source/cache.c
@@ -175,7 +175,8 @@ static int serve_slot(struct cache_slot *slot)
 	int err;
 
 	err = print_slot(slot);
-	if (err)
+	// A client that went away mid-page is not trouble worth a line.
+	if (err && err != EPIPE)
 		log_error("[cgit] Unable to send slot %s: %s (%d)\n", slot->path, strerror(err), err);
 	return err;
 }