[LyX/master] Make sure the cursor is in texted

[Enrico Forestieri]

commit 9edbeef7b7eeb21cadec451e71b1109cd4dfb219
Author: Enrico Forestieri <for...@lyx.org>
Date:   Thu Jan 28 14:13:17 2016 +0100

    Make sure the cursor is in texted

diff --git a/src/Cursor.cpp b/src/Cursor.cpp
index bc12197..e9bdf89 100644
--- a/src/Cursor.cpp
+++ b/src/Cursor.cpp
@@ -1947,7 +1947,7 @@ bool Cursor::upDownInText(bool up, bool & updateNeeded)
                        // Make sure that cur gets back whatever happened to 
dummy (Lgb)
                        operator=(dummy);
                }
-               if (pos() && paragraph().isEnvSeparator(pos() - 1))
+               if (inTexted() && pos() && paragraph().isEnvSeparator(pos() - 
1))
                        posBackward();
        } else {
                // if there is a selection, we stay out of any inset,