fix, wrong diagnostic output when a makefile rule is already geing processed

src/u_makeproject.pas

@@ -529,7 +529,7 @@ var
 begin
   if fMakeProc.isAssigned and fMakeProc.Active then
   begin
-    fMsgs.message('the project is already being processed by DUB', fAsProjectItf, amcProj, amkWarn);
+    fMsgs.message('the project is already being compiled by make', fAsProjectItf, amcProj, amkWarn);
     exit;
   end;
   killProcess(fMakeProc);