Fixes getWorkingUri if ls-files returns >1 result

Author: eamodio

CHANGELOG.md

@@ -10,6 +10,10 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 - Changes the experimental _Incoming Activity_ node in the _Repositories_ view to be available for everyone (not just if `"gitlens.insiders": true`)
 
+### Fixed
+
+- Fixes issue with locating a working file when the file is staged or modified
+
 ## [10.0.0]- 2019-09-20
 
 ### Added

src/git/gitService.ts

@@ -2568,7 +2568,7 @@ export class GitService implements Disposable {
 		do {
 			data = await Git.ls_files(repoPath, fileName);
 			if (data !== undefined) {
-				return GitUri.resolveToUri(data, repoPath);
+				return GitUri.resolveToUri(Strings.splitSingle(data, '\n')[0], repoPath);
 			}
 
 			// TODO: Add caching