user32: Declare some functions static

[Andrew Talbot]

Changelog:
    user32: Declare some functions static.

diff -urN a/dlls/user32/comm16.c b/dlls/user32/comm16.c
--- a/dlls/user32/comm16.c	2007-01-04 11:22:31.000000000 +0000
+++ b/dlls/user32/comm16.c	2007-01-31 19:57:07.000000000 +0000
@@ -361,7 +361,7 @@
 /*****************************************************************************
  *	COMM16_DCBtoDCB16	(Internal)
  */
-INT16 COMM16_DCBtoDCB16(LPDCB lpdcb, LPDCB16 lpdcb16)
+static INT16 COMM16_DCBtoDCB16(LPDCB lpdcb, LPDCB16 lpdcb16)
 {
 	if(lpdcb->BaudRate<0x10000)
 		lpdcb16->BaudRate = lpdcb->BaudRate;
diff -urN a/dlls/user32/menu.c b/dlls/user32/menu.c
--- a/dlls/user32/menu.c	2006-11-16 14:02:17.000000000 +0000
+++ b/dlls/user32/menu.c	2007-01-31 19:57:40.000000000 +0000
@@ -440,7 +440,7 @@
  * However, the real system menu handle is sometimes seen in the
  * WM_MENUSELECT parameters (and Word 6 likes it this way).
  */
-HMENU MENU_GetSysMenu( HWND hWnd, HMENU hPopupMenu )
+static HMENU MENU_GetSysMenu( HWND hWnd, HMENU hPopupMenu )
 {
     HMENU hMenu;