libcompat: Do not return a string for signal 0

ChangeLog

@@ -1,3 +1,8 @@
+2008-09-14  Guillem Jover  <guillem@debian.org>
+
+	* libcompat/strsignal.c (strsignal): Do not return a string for
+	signal 0.
+
 2008-09-14  Guillem Jover  <guillem@debian.org>
 
 	* libcompat/strsignal.c (sys_siglist): Insert a NULL entry at the

libcompat/strsignal.c

@@ -63,7 +63,7 @@ strsignal(int s)
 {
 	static char buf[100];
 
-	if (s >= 0 && s < sizeof(sys_siglist) / sizeof(sys_siglist[0]))
+	if (s > 0 && s < sizeof(sys_siglist) / sizeof(sys_siglist[0]))
 		return sys_siglist[s];
 
 	sprintf(buf, _("Signal no.%d"), s);