Changed the return value of GetKeyboardState and SetKeyboardState from
VOID to BOOL.

diff --git a/include/winuser.h b/include/winuser.h
index 6115637..a85b499 100644
--- a/include/winuser.h
+++ b/include/winuser.h
@@ -2883,7 +2883,7 @@
 /* Declarations for functions that are the same in Win16 and Win32 */
 VOID        WINAPI EndMenu(void);
 DWORD       WINAPI GetDialogBaseUnits(void);
-VOID        WINAPI GetKeyboardState(LPBYTE);
+BOOL        WINAPI GetKeyboardState(LPBYTE);
 DWORD       WINAPI GetMenuCheckMarkDimensions(void);
 LONG        WINAPI GetMessageExtraInfo(void);
 DWORD       WINAPI GetMessagePos(void);
@@ -2892,7 +2892,7 @@
 ATOM        WINAPI GlobalDeleteAtom(ATOM);
 DWORD       WINAPI OemKeyScan(WORD);
 BOOL        WINAPI ReleaseCapture(void);
-VOID        WINAPI SetKeyboardState(LPBYTE);
+BOOL        WINAPI SetKeyboardState(LPBYTE);
 VOID        WINAPI WaitMessage(VOID);