[LyX/master] DocBook: improve new lines around maths.

[Thibaut Cuvelier]

commit c1ec3394c6fa5f0e234fb9e802a2ddccdc67ab28
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Sat Aug 1 21:43:44 2020 +0200

    DocBook: improve new lines around maths.
---
 src/mathed/InsetMathHull.cpp |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/mathed/InsetMathHull.cpp b/src/mathed/InsetMathHull.cpp
index 5dd492c..d0e11fe 100644
--- a/src/mathed/InsetMathHull.cpp
+++ b/src/mathed/InsetMathHull.cpp
@@ -2424,6 +2424,7 @@ void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) cons
 	}
 
 	xs << xml::StartTag(name, attr);
+	xs << xml::CR();
 
 	// With DocBook 5, MathML must be within its own namespace; defined in Buffer.cpp::writeDocBookSource as "m".
 	// Output everything in a separate stream so that this does not interfere with the standard flow of DocBook tags.
@@ -2465,6 +2466,7 @@ void InsetMathHull::docbook(XMLStream & xs, OutputParams const & runparams) cons
 
 	// Output the complete formula to the DocBook stream.
 	xs << XMLStream::ESCAPE_NONE << osmath.str();
+	xs << xml::CR();
 	xs << xml::EndTag(name);
 }