[LyX/master] Make sure cursor is in texted after clicking

[Enrico Forestieri]

commit 8998b8837084a5100048fbd335c06ed6fc4bc26f
Author: Enrico Forestieri <for...@lyx.org>
Date:   Wed Jan 20 01:18:42 2016 +0100

    Make sure cursor is in texted after clicking
    
    Fixes #9936.

diff --git a/src/BufferView.cpp b/src/BufferView.cpp
index 6de832d..81ebe79 100644
--- a/src/BufferView.cpp
+++ b/src/BufferView.cpp
@@ -2514,7 +2514,8 @@ bool BufferView::mouseSetCursor(Cursor & cur, bool select)
        bool update = leftinset;
        if (!do_selection && d->cursor_.inTexted()) {
                update |= checkDepm(cur, d->cursor_);
-               if (cur.pos() && cur.paragraph().isEnvSeparator(cur.pos() - 1))
+               if (cur.inTexted() && cur.pos()
+                       && cur.paragraph().isEnvSeparator(cur.pos() - 1))
                    cur.posBackward();
        }