[LyX/master] Fix entering inset in visual cursor mode

[Jean-Marc Lasgouttes]

commit d3c00446179927360380c1511294e5a7ef19e269
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date:   Tue Jan 5 10:10:26 2016 +0100

    Fix entering inset in visual cursor mode
    
    Improve the test whether cursor has moved in Cursor::posVisLeft. The code 
for posVisRight had already been fixed for #5764 at 0730c923, but this replaces 
both tests by the proper == operator.
    
    Fixes bug #9913.

diff --git a/src/Cursor.cpp b/src/Cursor.cpp
index 09407a3..c1eb32f 100644
--- a/src/Cursor.cpp
+++ b/src/Cursor.cpp
@@ -744,10 +744,7 @@ bool Cursor::posVisRight(bool skip_inset)
 
        }
 
-       bool moved = (new_cur.pos() != pos()
-                                 || new_cur.pit() != pit()
-                                 || new_cur.boundary() != boundary()
-                                 || &new_cur.inset() != &inset());
+       bool const moved = new_cur != *this || new_cur.boundary() != boundary();
 
        if (moved) {
                LYXERR(Debug::RTL, "moving to: " << new_cur.pos()
@@ -843,9 +840,7 @@ bool Cursor::posVisLeft(bool skip_inset)
 
        }
 
-       bool moved = (new_cur.pos() != pos()
-                                 || new_cur.pit() != pit()
-                                 || new_cur.boundary() != boundary());
+       bool const moved = new_cur != *this || new_cur.boundary() != boundary();
 
        if (moved) {
                LYXERR(Debug::RTL, "moving to: " << new_cur.pos()