test: code size saving, no logic changes

ps: fix warning, make a bit smaller
kill -l: make smaller & know much more signals

function                                             old     new   delta
get_signum                                           121     153     +32
kill_main                                            826     843     +17
get_signame                                           44      36      -8
signals                                              252     224     -28
.rodata                                           131955  131923     -32
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/3 up/down: 49/-68)            Total: -19 bytes

1 files changed, 3 insertions, 1 deletions

diff --git a/procps/kill.c b/procps/kill.c
index e2b029d20..b3257492d 100644
--- a/procps/kill.c
+++ b/procps/kill.c
@@ -51,7 +51,9 @@ int kill_main(int argc, char **argv)
                 if (argc == 1) {
                         /* Print the whole signal list */
                         for (signo = 1; signo < 32; signo++) {
-                                puts(get_signame(signo));
+                                const char *name = get_signame(signo);
+                                if (!isdigit(name[0]))
+                                        puts(name);
                         }
                 } else { /* -l <sig list> */
                         while ((arg = *++argv)) {