loplugin:implicitboolconversion (clang-cl)

...after 2bb28265 "SalFrame Handle* methods can
return bool"

Change-Id: I15659eafc27e8402aeb407418e656d546c554f06

vcl/inc/win/saldata.hxx

@@ -184,8 +184,8 @@ void EmitTimerCallback();
 
 void SalTestMouseLeave();
 
-long ImplHandleSalObjKeyMsg( HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam );
-long ImplHandleSalObjSysCharMsg( HWND hWnd, WPARAM wParam, LPARAM lParam );
+bool ImplHandleSalObjKeyMsg( HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam );
+bool ImplHandleSalObjSysCharMsg( HWND hWnd, WPARAM wParam, LPARAM lParam );
 bool ImplHandleGlobalMsg( HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam, LRESULT& rlResult );
 
 WinSalObject* ImplFindSalObject( HWND hWndChild );