[LyX/master] DocBook: missing signal connection in GUI for MathML prefix.

[Thibaut Cuvelier]

commit 7a210e4c9a65ead976241c261f39ad2e3b0dcc56
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Tue May 25 00:00:08 2021 +0200

    DocBook: missing signal connection in GUI for MathML prefix.
---
 src/frontends/qt/GuiDocument.cpp |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/src/frontends/qt/GuiDocument.cpp b/src/frontends/qt/GuiDocument.cpp
index 3bda935..40d7bc0 100644
--- a/src/frontends/qt/GuiDocument.cpp
+++ b/src/frontends/qt/GuiDocument.cpp
@@ -924,8 +924,10 @@ GuiDocument::GuiDocument(GuiView & lv)
 		this, SLOT(change_adaptor()));
 	connect(outputModule->tableoutCB, SIGNAL(currentIndexChanged(int)),
 		this, SLOT(change_adaptor()));
+	connect(outputModule->mathmlprefixCB, SIGNAL(currentIndexChanged(int)),
+        this, SLOT(change_adaptor()));
 
-	connect(outputModule->shellescapeCB, SIGNAL(stateChanged(int)),
+    connect(outputModule->shellescapeCB, SIGNAL(stateChanged(int)),
 		this, SLOT(shellescapeChanged()));
 	connect(outputModule->outputsyncCB, SIGNAL(toggled(bool)),
 		this, SLOT(setOutputSync(bool)));