Link only a single .rc file with application.

diff --git a/programs/notepad/dialog.c b/programs/notepad/dialog.c
index e4c9428..f8ebd36 100644
--- a/programs/notepad/dialog.c
+++ b/programs/notepad/dialog.c
@@ -5,6 +5,7 @@
  *  To be distributed under the Wine License
  */
 
+#include <assert.h>
 #include <stdio.h>
 #include <windows.h>
 #include <commdlg.h>