[LyX/master] DocBook: simplify building an error message.

[Thibaut Cuvelier]

commit 5dd36404f2234395aa709f3723607a485e464dbb
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Mon Feb 26 15:09:10 2024 +0100

    DocBook: simplify building an error message.
---
 src/insets/InsetIndex.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/insets/InsetIndex.cpp b/src/insets/InsetIndex.cpp
index c7e88f0cd2..54058b8ea7 100644
--- a/src/insets/InsetIndex.cpp
+++ b/src/insets/InsetIndex.cpp
@@ -450,7 +450,7 @@ void InsetIndex::docbook(XMLStream & xs, OutputParams const & runparams) const
 	// TODO: Could handle formatting as significance="preferred"?
 	if (!command.empty()) {
 		docstring error = from_utf8("Unsupported feature: an index entry contains a | with an unsupported command, ")
-				          + command + from_utf8(". ") + from_utf8("Complete entry: \"") + latexString + from_utf8("\"");
+				          + command + from_utf8(". Complete entry: \"") + latexString + from_utf8("\"");
 		LYXERR0(error);
 		xs << XMLStream::ESCAPE_NONE << (from_utf8("<!-- Output Error: ") + error + from_utf8(" -->\n"));
 	}