libcompat: Offset signal string array by one

Insert an entry for signal 0 so that the rest of the signals have their
proper name instead of the previous one.

ChangeLog

@@ -1,3 +1,8 @@
+2008-09-14  Guillem Jover  <guillem@debian.org>
+
+	* libcompat/strsignal.c (sys_siglist): Insert a NULL entry at the
+	beginning.
+
 2008-09-14  Guillem Jover  <guillem@debian.org>
 
 	* libcompat/strsignal.c (sys_siglist): Remove array size from

libcompat/strsignal.c

@@ -29,6 +29,7 @@
 
 #ifndef HAVE_DECL_SYS_SIGLIST
 const char *const sys_siglist[] = {
+	NULL,		/* 0 */
 	"SIGHUP",	/* 1 */
 	"SIGINT",	/* 2 */
 	"SIGQUIT",	/* 3 */