always let GtkTextView have mouse release events to avoid assertion failures in gtk_text_view_start_selection_drag()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40954 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/textctrl.h

@@ -167,6 +167,9 @@ public:
     // should we mark the control as dirty? always resets the flag
     bool MarkDirtyOnChange();
 
+    // always let GTK have mouse release events for multiline controls
+    virtual bool GTKProcessEvent(wxEvent& event) const;
+
 
     static wxVisualAttributes
     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);