Two arrays were born from the same seeds, both grew into complementary sets

of pointers to strings.  These two arrays were fixed to the same size, but one
had an implicit zeroed trailer element, which was unused because the size was
used up by the ones before said zeroed trailer element.  So the unused limb was
chopped off the over-sized-but-not-over-sized array, and everyone lived happily
ever after.

lib/libc/gen/siglist.c

@@ -72,7 +72,7 @@ const char *const sys_signame[NSIG] = {
 	"winch",			/* SIGWINCH */
 	"info",				/* SIGINFO */
 	"usr1",				/* SIGUSR1 */
-	"usr2",				/* SIGUSR2 */
+	"usr2"				/* SIGUSR2 */
 };
 
 const char *const sys_siglist[NSIG] = {