Merge branch 'dc/complete-restore'

The command line completion support (in contrib/) learns to give
modified paths to the "git restore" command.

* dc/complete-restore:
  completion: tab completion of filenames for 'git restore'

Author: gitster

contrib/completion/git-completion.bash

@@ -2890,6 +2890,10 @@ _git_restore ()
 	--*)
 		__gitcomp_builtin restore
 		;;
+	*)
+		if __git rev-parse --verify --quiet HEAD >/dev/null; then
+			__git_complete_index_file "--modified"
+		fi
 	esac
 }