LaTeX writer: add newline if math ends in a comment.

This prevents the closing delimiter from being swalled
up in the comment.

Closes #4880.

1 files changed, 7 insertions, 0 deletions

diff --git a/test/command/4880.md b/test/command/4880.md
new file mode 100644
index 000000000..638e3edee
--- /dev/null
+++ b/test/command/4880.md
@@ -0,0 +1,7 @@
+```
+% pandoc -t latex
+$x=y%comment$
+^D
+\(x=y%comment
+\)
+```