shortlog: default to HEAD when the standard input is a tty

diff --git a/compat/unsetenv.c b/compat/unsetenv.c
index 3a5e4ec04ae4a523823e633031b85559bf5dc973..eb29f5e0849370afe90c400271fea12e0f9090aa 100644 (file)
--- a/compat/unsetenv.c
+++ b/compat/unsetenv.c
@@ -1,5 +1,4 @@
-#include <stdlib.h>
-#include <string.h>
+#include "../git-compat-util.h"
 
 void gitunsetenv (const char *name)
 {