[LyX/master] Fix bug #11787.

[Richard Kimberly Heck]

commit 7af6575cf6cd764b8b567b358907ac9a7a8e322b
Author: Richard Kimberly Heck <rikiheck at lyx.org>
Date:   Tue Mar 17 01:33:44 2020 -0400

    Fix bug #11787.
    
    Make sure we are actually at the end of the document before issuing
    \maketitle because we are at the end of the document.
---
 src/output_latex.cpp |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/output_latex.cpp b/src/output_latex.cpp
index 4aa797b..1185e2d 100644
--- a/src/output_latex.cpp
+++ b/src/output_latex.cpp
@@ -1688,8 +1688,11 @@ void latexParagraphs(Buffer const & buf,
 			//os << '\n';
 	}
 
-	// It might be that we only have a title in this document
-	if (was_title && !already_title) {
+	// It might be that we only have a title in this document.
+	// But if we're in a branch, this is not the end of
+	// the document. (There may be some other checks of this
+	// kind that are needed.)
+	if (was_title && !already_title && !runparams.inbranch) {
 		if (tclass.titletype() == TITLE_ENVIRONMENT) {
 			os << "\\end{" << from_ascii(tclass.titlename())
 			   << "}\n";