Fix loop after request done, can_read will happily return true even if the client has closed... TODO: perhaps check for client closed explicitly

if we ever feel like doing multiple request scheme

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@16566 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server/sbin/xcatd

@@ -2025,7 +2025,7 @@ sub service_connection {
         $line = "";
       }
       $req = get_request($sock,$globalencode,$line);
-      unless ($req) { next; }
+      unless ($req) { last; }
       { #TODO: find closing brace..
         #first change peername on 'becomeuser' tag if present and valid
         if (defined $req->{becomeuser}) {