add missing comma that causes buffer overflow in event socket

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15128 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_event.c

@@ -182,7 +182,7 @@ static char *EVENT_NAMES[] = {
 	"NAT",
 	"RECORD_START",
 	"RECORD_STOP",
-	"CALL_UPDATE"
+	"CALL_UPDATE",
 	"ALL"
 };