git-svn: Disambiguate rev-list arguments to improve error message

Add "--" in the "git rev-list" command line so that if there is a bug
and the revisions cannot be found, the error message is a bit less
cryptic.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Acked-by: Eric Wong <normalperson@yhbt.net>

git-svn.perl

@@ -3154,9 +3154,9 @@ sub check_cherry_pick {
 	my $parents = shift;
 	my @ranges = @_;
 	my %commits = map { $_ => 1 }
-		_rev_list("--no-merges", $tip, "--not", $base, @$parents);
+		_rev_list("--no-merges", $tip, "--not", $base, @$parents, "--");
 	for my $range ( @ranges ) {
-		delete @commits{_rev_list($range)};
+		delete @commits{_rev_list($range, "--")};
 	}
 	for my $commit (keys %commits) {
 		if (has_no_changes($commit)) {