[git commit] libbb: code shrink

[Denys Vlasenko]

commit: http://git.busybox.net/busybox/commit/?id=543efd7b4b4265ae507b4e3b048bf23a51a726fc
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master

function                                             old     new   delta
xmalloc_ttyname                                       46      42      -4

Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 libbb/xfuncs_printf.c |   12 +++++-------
 1 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/libbb/xfuncs_printf.c b/libbb/xfuncs_printf.c
index 05aa07c..a706832 100644
--- a/libbb/xfuncs_printf.c
+++ b/libbb/xfuncs_printf.c
@@ -541,13 +541,11 @@ int FAST_FUNC bb_xioctl(int fd, unsigned request, void *argp)
 
 char* FAST_FUNC xmalloc_ttyname(int fd)
 {
-	char *buf = xzalloc(128);
-	int r = ttyname_r(fd, buf, 127);
-	if (r) {
-		free(buf);
-		buf = NULL;
-	}
-	return buf;
+	char buf[128];
+	int r = ttyname_r(fd, buf, sizeof(buf) - 1);
+	if (r)
+		return NULL;
+	return xstrdup(buf);
 }
 
 void FAST_FUNC generate_uuid(uint8_t *buf)