serialui: Declare some items static

[Andrew Talbot]

Changelog:
    serialui: Declare some items static.

diff -urN a/dlls/serialui/confdlg.c b/dlls/serialui/confdlg.c
--- a/dlls/serialui/confdlg.c	2006-10-07 17:37:03.000000000 +0100
+++ b/dlls/serialui/confdlg.c	2007-01-27 17:34:03.000000000 +0000
@@ -47,7 +47,7 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(comm);
 
-HMODULE SERIALUI_hModule = 0;
+static HMODULE SERIALUI_hModule;
 
 /***********************************************************************
  * DllMain [Internal] Initializes the internal 'SERIALUI.DLL'.
@@ -342,7 +342,7 @@
  *
  * Shows a dialog for configuring a COMM port
  */
-INT_PTR CALLBACK SERIALUI_ConfigDialogProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+static INT_PTR CALLBACK SERIALUI_ConfigDialogProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 {
     static const WCHAR szSettings[] = {
         'S','e','t','t','i','n','g','s',' ','f','o','r',' ',0