[LyX/master] When handling mouse events, make the undo group a bit larger

[Jean-Marc Lasgouttes]

commit 98883304e2d5f68f5be8124423295aecb43e3463
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date:   Wed Mar 16 10:27:32 2016 +0100

    When handling mouse events, make the undo group a bit larger
    
    notifyCursorLeave can delete empty insets in mathed.
    
    Fixes bug #10022.

diff --git a/src/BufferView.cpp b/src/BufferView.cpp
index 8783d47..a267410 100644
--- a/src/BufferView.cpp
+++ b/src/BufferView.cpp
@@ -2225,8 +2225,6 @@ void BufferView::mouseEventDispatch(FuncRequest const & 
cmd0)
        if (!inset || !cur.result().dispatched())
                cur.dispatch(cmd);
 
-       cur.endUndoGroup();
-
        // Notify left insets
        if (cur != old) {
                bool badcursor = old.fixIfBroken() | cur.fixIfBroken();
@@ -2235,6 +2233,8 @@ void BufferView::mouseEventDispatch(FuncRequest const & 
cmd0)
                        cursor().fixIfBroken();
        }
 
+       cur.endUndoGroup();
+
        // Do we have a selection?
        theSelection().haveSelection(cursor().selection());