Merge branch 'gulp-git-unlink' into 'pregmod-master'

Gulp: do not try to unlink non-existent file

See merge request pregmodfan/fc-pregmod!8124

gulpfile.js

@@ -119,7 +119,11 @@ function injectGitCommit(cb) {
 }
 
 function cleanupGit(cb) {
-	fs.unlink(cfg.gitVersionFile, cb);
+	if (fs.existsSync(cfg.gitVersionFile)) {
+		fs.unlink(cfg.gitVersionFile, cb);
+	} else {
+		cb();
+	}
 }
 
 function compileStory() {