check usermode +R first, then +q, and then free target limits and last silence list

dont use a free target when the message is going to be stopped by +R or +q
dont check target limits and silence list until the end,
which are probably more costly than +R/+q checks

diff -r a6514af6df3d ircd/ircd_relay.c
--- a/ircd/ircd_relay.c	Wed Mar 24 12:31:16 2010 +0100
+++ b/ircd/ircd_relay.c	Wed Mar 24 12:59:31 2010 +0100
@@ -393,10 +393,6 @@
     send_reply(sptr, ERR_NOSUCHNICK, name);
     return;
   }
-  if ((!IsRealChannelService(acptr) &&
-       check_target_limit(sptr, acptr, cli_name(acptr), 0)) ||
-      is_silenced(sptr, acptr))
-    return;
 
   /* ASUKA -- slug
    * +R check, if target is +R and we're not +r (or opered) then
@@ -413,6 +409,11 @@
     return;
   }
 
+  if ((!IsRealChannelService(acptr) &&
+       check_target_limit(sptr, acptr, cli_name(acptr), 0)) ||
+      is_silenced(sptr, acptr))
+    return;
+
   /*
    * send away message if user away
    */
@@ -444,10 +445,6 @@
 
   if (0 == (acptr = FindUser(name)))
     return;
-  if ((!IsRealChannelService(acptr) && 
-       check_target_limit(sptr, acptr, cli_name(acptr), 0)) ||
-      is_silenced(sptr, acptr))
-    return;
 
   /* ASUKA -- slug
    * +R check, if target is +R and we're not +r (or opered) then
@@ -460,6 +457,11 @@
   if (IsCommonChansOnly(acptr) && !IsXtraOp(sptr) && !common_chan_count(acptr, sptr, 1))
     return;
 
+  if ((!IsRealChannelService(acptr) && 
+       check_target_limit(sptr, acptr, cli_name(acptr), 0)) ||
+      is_silenced(sptr, acptr))
+    return;
+
   /*
    * deliver the message
    */