--- m_who.old	2003-08-25 22:21:57.000000000 +0100
+++ m_who.c	2003-08-25 22:22:07.000000000 +0100
@@ -169,6 +169,9 @@
   {
     mask++;
     whois_cheat = 1;
+
+    if(EmptyString(mask))
+	    return;
   }
 
   /* '/who #some_channel' */