Create a proper header file for the exported functions from vncviewer.cxx.


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4579 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/vncviewer/Viewport.cxx b/vncviewer/Viewport.cxx
index 80b4854..5ff9bf4 100644
--- a/vncviewer/Viewport.cxx
+++ b/vncviewer/Viewport.cxx
@@ -42,6 +42,7 @@
 #include "fltk_layout.h"
 #include "parameters.h"
 #include "keysym2ucs.h"
+#include "vncviewer.h"
 
 #include <FL/fl_draw.H>
 #include <FL/fl_ask.H>
@@ -53,9 +54,6 @@
 using namespace rfb;
 using namespace rdr;
 
-extern void exit_vncviewer();
-extern void about_vncviewer();
-
 static rfb::LogWriter vlog("Viewport");
 
 // Menu constants