[LyX/master] MathML: replace HTML entities with XML ones in more places

[Thibaut Cuvelier]

commit 66fab7038831874ab2466e60d094287e4fb8901a
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Fri Jan 20 02:25:08 2023 +0100

    MathML: replace HTML entities with XML ones in more places
    
    This part should have been committed with bc73a857 in the first place.
---
 src/mathed/InsetMathExInt.cpp |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mathed/InsetMathExInt.cpp b/src/mathed/InsetMathExInt.cpp
index 4812eec..c5c7262 100644
--- a/src/mathed/InsetMathExInt.cpp
+++ b/src/mathed/InsetMathExInt.cpp
@@ -153,11 +153,11 @@ void InsetMathExInt::mathmlize(MathMLStream & ms) const
 		ms << ETag("msup");
 	ms << cell(0)
 	   << "<" << from_ascii(ms.namespacedTag("mo")) << "> "
-	   << " ⁢ "
+	   << " ⁢ "
        << "</" << from_ascii(ms.namespacedTag("mo")) << ">"
 	   << MTag("mrow")
 	   << "<" << from_ascii(ms.namespacedTag("mo")) << "> "
-	   << " ⅆ "
+	   << " ⅆ "
 	   << "</" << from_ascii(ms.namespacedTag("mo")) << ">"
 	   << cell(1)
 	   << ETag("mrow");