Some bug fixes:

- 0.0 rather then -777.77 for a missing value in four circle
- No error output in TAS

sicshipadaba.c

@@ -4238,7 +4238,9 @@ static hdbCallbackReturn SICSNotifyScriptCallback(pHdb node, void *userData,
     return hdbContinue;
   }
 
-  copyHdbValue(mm->v, &node->value);
+  if(mm->v != &node->value){
+    copyHdbValue(mm->v, &node->value);
+  }
   status = Tcl_Eval(InterpGetTcl(pServ->pSics), script);
   if (status != TCL_OK) {
     tracePar(node->name,"ERROR: %s while evaluating updatescript %s",