Increase the SpyTimerTick read chunk from 1KB-1 to 8KB. This appears

to resolve the infinite loop when emulvt.pas received terminal sequences it
doesn't like (e.g. SyncTERM font-transfers).

src/sbbs3/ctrl/SpyFormUnit.cpp

@@ -100,13 +100,13 @@ int __fastcall TSpyForm::strip_telnet(uchar *buf, int len)
 //---------------------------------------------------------------------------
 void __fastcall TSpyForm::SpyTimerTick(TObject *Sender)
 {
-    uchar   buf[1024];
+    uchar   buf[8192];
     int     rd;
 
     if(*outbuf==NULL)
         return;
 
-    rd=RingBufRead(*outbuf,buf,sizeof(buf)-1);
+    rd=RingBufRead(*outbuf,buf,sizeof(buf));
     if(rd) {
         rd=strip_telnet(buf,rd);
         Terminal->WriteBuffer(buf,rd);