message: Tweak "wrap at" sizing to look good on GTK+3
  See
diff: @@ -997,11 +997,11 @@ public:
  crlfbox->AddSpacer(PX(10));
  crlfbox->Add(m_wrap, wxSizerFlags().Center().BORDER_WIN(wxTOP, PX(1)));
  #ifdef __WXGTK3__
  - m_wrapWidth = new wxSpinCtrl(this, wxID_ANY, "", wxDefaultPosition, wxSize(PX(100),-1));
  + m_wrapWidth = new wxSpinCtrl(this, wxID_ANY, "", wxDefaultPosition, wxSize(PX(110),-1));
  #else
  m_wrapWidth = new wxSpinCtrl(this, wxID_ANY, "", wxDefaultPosition, wxSize(PX(50),-1));
  #endif
  - m_wrapWidth->SetRange(10, 1000);
  + m_wrapWidth->SetRange(10, 999);
  crlfbox->Add(m_wrapWidth, wxSizerFlags().Center().BORDER_MACOS(wxLEFT, PX(3)));
  m_keepFmt = new wxCheckBox(this, wxID_ANY, _("Preserve formatting of existing files"));
  