ash: allow "trap NUM [SIG]..." syntax

While at it, make get_signum() return -1 for numeric strings >= NSIG.

function                                             old     new   delta
trapcmd                                              292     306     +14
get_signum                                           295     300      +5
builtin_trap                                         413     412      -1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 19/-1)              Total: 18 bytes

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

1 files changed, 1 insertions, 1 deletions

diff --git a/procps/kill.c b/procps/kill.c
index 5cff24475..09beefb2d 100644
--- a/procps/kill.c
+++ b/procps/kill.c
@@ -188,7 +188,7 @@ int kill_main(int argc UNUSED_PARAM, char **argv)
                 arg = *++argv;
         } /* else it must be -SIG */
         signo = get_signum(arg);
-        if (signo < 0) { /* || signo > MAX_SIGNUM ? */
+        if (signo < 0) {
                 bb_error_msg("bad signal name '%s'", arg);
                 return EXIT_FAILURE;
         }