[PATCH] Fix pkt-line.h to compile with a non-GCC compiler

pkt-line.h uses GCC's __attribute__ extension but does not include
git-compat-util.h.  So it will not compile with a compiler that does
not support this extension.
---
 pkt-line.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/pkt-line.h b/pkt-line.h
index 9abef24..9df653f 100644
--- a/pkt-line.h
+++ b/pkt-line.h

@@ -1,6 +1,8 @@
 #ifndef PKTLINE_H
 #define PKTLINE_H
 
+#include "git-compat-util.h"
+
 /*
  * Silly packetized line writing interface
  */

-- 
1.4.0.g64e8