[LyX/2.3-staging] Correct strange FIXME

[Guillaume Munch]

commit 439ad49933b42f50e2d8b61118fdd67220e72d63
Author: Guillaume Munch <g...@lyx.org>
Date:   Sat Apr 16 23:40:47 2016 +0100

    Correct strange FIXME

diff --git a/src/Cursor.cpp b/src/Cursor.cpp
index 26aeabf..ed182ac 100644
--- a/src/Cursor.cpp
+++ b/src/Cursor.cpp
@@ -1061,12 +1061,6 @@ CursorSlice Cursor::normalAnchor() const
 }
 
 
-DocIterator & Cursor::realAnchor()
-{
-       return anchor_;
-}
-
-
 CursorSlice Cursor::selBegin() const
 {
        if (!selection())
diff --git a/src/Cursor.h b/src/Cursor.h
index a0f5ec1..de24056 100644
--- a/src/Cursor.h
+++ b/src/Cursor.h
@@ -297,10 +297,9 @@ public:
 
        /// access to normalized selection anchor
        CursorSlice normalAnchor() const;
-       // FIXME: this can't be a const & and a const function because
-       // LFUN_TAB_* wants to move the real anchor.
        /// access to real selection anchor
-       DocIterator & realAnchor();
+       DocIterator const & realAnchor() const { return anchor_; }
+       DocIterator & realAnchor() { return anchor_; }
        /// sets anchor to cursor position
        void resetAnchor();
        /// access to owning BufferView