Required hostname not flagging as an error

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1220 f882894a-f735-0410-b71e-b25c423dba1c

plugins/check_ping.c

@@ -50,7 +50,7 @@ int cpl = UNKNOWN_PACKET_LOSS;
 float wrta = UNKNOWN_TRIP_TIME;
 float crta = UNKNOWN_TRIP_TIME;
 char **addresses = NULL;
-int n_addresses;
+int n_addresses = 0;
 int max_addr = 1;
 int max_packets = -1;
 int verbose = 0;
@@ -392,6 +392,11 @@ validate_arguments ()
 			usage2 (_("Invalid hostname/address"), addresses[i]);
 	}
 
+	if (n_addresses == 0) {
+		printf(_("You must specify a server address or host name\n"));
+		return ERROR;
+	}
+
 	return OK;
 }