user32: Remove WINAPI/CALLBACK on static functions where not needed.

dlls/user32/button.c

@@ -229,7 +229,7 @@ static void setup_clipping( HWND hwnd, HDC hdc )
 /***********************************************************************
  *           ButtonWndProc_common
  */
-static LRESULT WINAPI ButtonWndProc_common(HWND hWnd, UINT uMsg,
+static LRESULT ButtonWndProc_common(HWND hWnd, UINT uMsg,
                                     WPARAM wParam, LPARAM lParam, BOOL unicode )
 {
     RECT rect;

dlls/user32/edit.c

@@ -223,7 +223,7 @@ static void	EDIT_AdjustFormatRect(EDITSTATE *es);
 static void	EDIT_SetRectNP(EDITSTATE *es, const RECT *lprc);
 static void	EDIT_UnlockBuffer(EDITSTATE *es, BOOL force);
 static void	EDIT_UpdateScrollInfo(EDITSTATE *es);
-static INT CALLBACK EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action);
+static INT      EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action);
 /*
  *	EM_XXX message handlers
  */
@@ -449,7 +449,7 @@ static inline INT get_vertical_line_count(EDITSTATE *es)
  *	names).
  *
  */
-static LRESULT WINAPI EditWndProc_common( HWND hwnd, UINT msg,
+static LRESULT EditWndProc_common( HWND hwnd, UINT msg,
                                    WPARAM wParam, LPARAM lParam, BOOL unicode )
 {
 	EDITSTATE *es = (EDITSTATE *)GetWindowLongPtrW( hwnd, 0 );
@@ -2602,7 +2602,7 @@ static void EDIT_UpdateScrollInfo(EDITSTATE *es)
  *		internally, so we can decide this for ourselves.
  *
  */
-static INT CALLBACK EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action)
+static INT EDIT_WordBreakProc(LPWSTR s, INT index, INT count, INT action)
 {
 	INT ret = 0;
 

dlls/user32/listbox.c

@@ -2606,7 +2606,7 @@ static BOOL LISTBOX_Destroy( LB_DESCR *descr )
 /***********************************************************************
  *           ListBoxWndProc_common
  */
-static LRESULT WINAPI ListBoxWndProc_common( HWND hwnd, UINT msg,
+static LRESULT ListBoxWndProc_common( HWND hwnd, UINT msg,
                                       WPARAM wParam, LPARAM lParam, BOOL unicode )
 {
     LB_DESCR *descr = (LB_DESCR *)GetWindowLongPtrW( hwnd, 0 );

dlls/user32/tests/class.c

@@ -814,7 +814,7 @@ static BOOL RegisterTestDialog(HINSTANCE hInstance)
 
 /* test registering a dialog box created by using the CLASS directive in a
    resource file, then test creating the dialog using CreateDialogParam. */
-static void WINAPI CreateDialogParamTest(HINSTANCE hInstance)
+static void CreateDialogParamTest(HINSTANCE hInstance)
 {
     HWND hWndMain;