minijail: use %m instead of strerror

Use the GNU %m extension to display the errno string.  This makes
the code a bit smaller and fixes build errors where util.h doesn't
include errno.h itself.

BUG=None
TEST=ran minijail w/-p as non-root and checked error log included errno decoded

Change-Id: I104e2e8092ecae1f77951c2f67c7b34bf9eff6a7
Reviewed-on: https://chromium-review.googlesource.com/239841
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/util.h b/util.h
index 04b9465..d07e5b1 100644
--- a/util.h
+++ b/util.h
@@ -18,7 +18,7 @@
 } while (0)
 
 #define pdie(_msg, ...) \
-	die(_msg ": %s", ## __VA_ARGS__, strerror(errno))
+	die(_msg ": %m", ## __VA_ARGS__)
 
 #define warn(_msg, ...) \
 	syslog(LOG_WARNING, "libminijail: " _msg, ## __VA_ARGS__)