svx: assert on undisposed AbstractSvxHpLinkDlg

3  in () at /lib64/libc.so.6
4  in VclPtr<AbstractSvxHpLinkDlg>::~VclPtr() (this=0x88d47e8, __in_chrg=<optimized out>) at include/vcl/vclptr.hxx:115
5  in SvxHlinkDlgWrapper::~SvxHlinkDlgWrapper() (this=0x88d47a0, __in_chrg=<optimized out>) at include/svx/hyperdlg.hxx:34
6  in SvxHlinkDlgWrapper::~SvxHlinkDlgWrapper() (this=0x88d47a0, __in_chrg=<optimized out>) at include/svx/hyperdlg.hxx:34
7  in SfxChildWindow::Destroy() (this=0x88d47a0) at sfx2/source/appl/childwin.cxx:182
8  in SfxWorkWindow::RemoveChildWin_Impl(SfxChildWin_Impl*) (this=0x6c83940, pCW=0x683bc20) at sfx2/source/appl/workwin.cxx:1425
9  in SfxWorkWindow::ToggleChildWindow_Impl(unsigned short, bool) (this=0x6c83940, nId=5678, bSetFocus=true) at sfx2/source/appl/workwin.cxx:1832
10 in SfxViewFrame::ToggleChildWindow(unsigned short) (this=0x6afdae0, nId=5678) at sfx2/source/view/viewfrm.cxx:2964

Change-Id: I84a1ba817dc8449dc1942b6ebd443ec955e8c622

include/svx/hyperdlg.hxx

@@ -39,6 +39,7 @@ private:
 public:
     SvxHlinkDlgWrapper( vcl::Window*pParent, sal_uInt16 nId,
                         SfxBindings* pBindings, SfxChildWinInfo* pInfo );
+    virtual ~SvxHlinkDlgWrapper() override;
 
     SFX_DECL_CHILDWINDOW_WITHID(SvxHlinkDlgWrapper);
     virtual bool    QueryClose() override;

svx/source/dialog/hyperdlg.cxx

@@ -77,4 +77,9 @@ bool SvxHlinkDlgWrapper::QueryClose()
     return !mpDlg || mpDlg->QueryClose();
 }
 
+SvxHlinkDlgWrapper::~SvxHlinkDlgWrapper()
+{
+    mpDlg.disposeAndClear();
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */