[LyX/master] Remove unnecessary change.

[Richard Kimberly Heck]

commit 49f019e129cf6a63ec942cd863107459e3ffa321
Author: Richard Kimberly Heck <rikiheck at lyx.org>
Date:   Fri Dec 18 17:11:05 2020 -0500

    Remove unnecessary change.
---
 src/VCBackend.cpp |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/src/VCBackend.cpp b/src/VCBackend.cpp
index 7f97455..f1f19b2 100644
--- a/src/VCBackend.cpp
+++ b/src/VCBackend.cpp
@@ -107,7 +107,6 @@ bool VCS::makeRCSRevision(string const &version, string &revis) const
 
 FileName VCS::checkParentDirs(FileName const & start, std::string const & file)
 {
-	static FileName empty;
 	FileName dirname = start.onlyPath();
 	do {
 		FileName tocheck = FileName(addPathName(dirname.absFileName(), file));
@@ -117,7 +116,7 @@ FileName VCS::checkParentDirs(FileName const & start, std::string const & file)
 		// this construct because of #8295
 		dirname = FileName(dirname.absFileName()).parentPath();
 	} while (!dirname.empty());
-	return empty;
+	return FileName();
 }