[LyX/master] Revert c6ce76c2 and fix 670efa8f

[Guillaume Munch]

commit f6bd79745e65006895070e2e1da854abc6d4d431
Author: Guillaume Munch <g...@lyx.org>
Date:   Tue Jul 5 00:18:21 2016 +0200

    Revert c6ce76c2 and fix 670efa8f
    
    Thanks Stephan
---
 src/mathed/MathStream.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mathed/MathStream.h b/src/mathed/MathStream.h
index 28eda3f..3116ab4 100644
--- a/src/mathed/MathStream.h
+++ b/src/mathed/MathStream.h
@@ -14,7 +14,6 @@
 
 #include "InsetMath.h"
 #include "texstream.h"
-#include "TexRow.h"
 
 #include "support/Changer.h"
 #include "support/strfwd.h"
@@ -27,6 +26,7 @@ class Encoding;
 class InsetMath;
 class MathAtom;
 class MathData;
+struct RowEntry;
 
 //
 // LaTeX/LyX