use %m printf specifier where appropriate

function                                             old     new   delta
out                                                   85      75     -10
udhcpd_main                                         1472    1461     -11
open_stdio_to_tty                                     98      85     -13
init_exec                                            245     232     -13
udhcpc_main                                         2763    2749     -14
do_cmd                                              4771    4755     -16
status_line_bold_errno                                32      14     -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-95)             Total: -95 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 8 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 3fa7f4d9f..39705a350 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -1312,16 +1312,9 @@ ash_msg_and_raise_error(const char *msg, ...)
 }
 
 /*
- * Use '%m' to append error string on platforms that support it, '%s' and
- * strerror() on those that don't.
- *
  * 'fmt' must be a string literal.
  */
-#ifdef HAVE_PRINTF_PERCENTM
-#define ash_msg_and_raise_perror(fmt, ...) ash_msg_and_raise_error(fmt ": %m", ##__VA_ARGS__)
-#else
-#define ash_msg_and_raise_perror(fmt, ...) ash_msg_and_raise_error(fmt ": %s", ##__VA_ARGS__, strerror(errno))
-#endif
+#define ash_msg_and_raise_perror(fmt, ...) ash_msg_and_raise_error(fmt ": "STRERROR_FMT, ##__VA_ARGS__ STRERROR_ERRNO)
 
 static void raise_error_syntax(const char *) NORETURN;
 static void