[PATCH] ds: flush_write: early return on closed socket

[Eric Wong]

This quiets warnings from IMAP::fetch_blob (called via
long_response) failing to access `$self->{ibx}->git'
because ->{ibx} gets deleted by IMAP::close.
---
 lib/PublicInbox/DS.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/PublicInbox/DS.pm b/lib/PublicInbox/DS.pm
index b7753e1a..aa65b2d3 100644
--- a/lib/PublicInbox/DS.pm
+++ b/lib/PublicInbox/DS.pm
@@ -421,8 +421,8 @@ sub epbit ($$) { # (sock, default)
 # returns 1 if done, 0 if incomplete
 sub flush_write ($) {
     my ($self) = @_;
+    my $sock = $self->{sock} or return;
     my $wbuf = $self->{wbuf} or return 1;
-    my $sock = $self->{sock};
 
 next_buf:
     while (my $bref = $wbuf->[0]) {
--
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