[LyX/master] DocBook: fix issue with fonts.

[Thibaut Cuvelier]

commit 7a1b82a16ae5594e7354c507ecb47082abada9f4
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Sun Aug 30 23:29:02 2020 +0200

    DocBook: fix issue with fonts.
---
 .../docbook/issue1732_charstyles-docbook.xml       |    1 -
 src/xml.cpp                                        |    3 ---
 2 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/autotests/export/docbook/issue1732_charstyles-docbook.xml b/autotests/export/docbook/issue1732_charstyles-docbook.xml
index 0ed9b87..fc9bffe 100644
--- a/autotests/export/docbook/issue1732_charstyles-docbook.xml
+++ b/autotests/export/docbook/issue1732_charstyles-docbook.xml
@@ -3,5 +3,4 @@
   See http://www.lyx.org/ for more information -->
 <article xml:lang="en_US" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:xi="http://www.w3.org/2001/XInclude" version="5.2">
 <para><emphasis role='bold'>Fett </emphasis><emphasis>hervorgehoben</emphasis> <code>monospace</code><emphasis role='underline'> unterstrichen.</emphasis></para>
-
 </article>
\ No newline at end of file
diff --git a/src/xml.cpp b/src/xml.cpp
index 150f4c5..dd9790f 100644
--- a/src/xml.cpp
+++ b/src/xml.cpp
@@ -208,9 +208,6 @@ bool XMLStream::closeFontTags()
 		if (**curtag != xml::parsep_tag)
 			os_ << (*curtag)->writeEndTag();
 		tag_stack_.pop_back();
-		// this shouldn't happen, since then the font tags
-		// weren't in any other tag.
-		LASSERT(!tag_stack_.empty(), return true);
 		if (tag_stack_.empty())
 			return true;
 		curtag = &tag_stack_.back();