converting in-line member to VclPtr needs a disposeAndClear in destructor.

Change-Id: I533eede461d173bd270e5a309fa13aab37bc0a13
diff --git a/starmath/source/view.cxx b/starmath/source/view.cxx
index 2a5ec95..1e602de 100644
--- a/starmath/source/view.cxx
+++ b/starmath/source/view.cxx
@@ -1974,6 +1974,7 @@ SmViewShell::~SmViewShell()
    SmEditWindow *pEditWin = GetEditWindow();
    if (pEditWin)
        pEditWin->DeleteEditView( *this );
    aGraphic.disposeAndClear();
}

void SmViewShell::Deactivate( bool bIsMDIActivate )