From b0a54eafe9a6c62ac45070f11328217f5811dd8d Mon Sep 17 00:00:00 2001
From: Michael Pyne <mpyne@kde.org>
Date: Fri, 30 Mar 2012 00:21:26 -0400
Subject: [PATCH] Check for the "no output" case in filter_program_output.

E.g. for git command output when we haven't quite cloned the module for the
first time you're likely to get undef for the output (since the command will
just fail).  Check for that.
---
 kdesrc-build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kdesrc-build b/kdesrc-build
index 9bcf27e..26ba6ac 100755
--- a/kdesrc-build
+++ b/kdesrc-build
@@ -4822,7 +4822,7 @@ sub git_commit_id
         undef, # No filter
         qw/git --git-dir/, $gitdir, 'rev-parse', $commit,
     );
-    chomp $id;
+    chomp $id if $id;
 
     return $id;
 }