[PATCH] Avoid git-rev-parse warnings in gitweb blame

[Rafael Garcia-Suarez <rgarciasuarez@gmail.com>]

Adding a '--' to the command-line avoids git-rev-parse emitting an error
message "ambiguous argument... Use '--' to separate paths from revisions".

Signed-off-by: Rafael Garcia-Suarez <rgarciasuarez@gmail.com>
---
 gitweb/gitweb.perl |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 55fb100..472326f 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -4226,7 +4226,7 @@ HTML
 			              esc_html($rev));
 			print "</td>\n";
 		}
-		open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
+		open (my $dd, "-|", git_cmd(), "rev-parse", '--', "$full_rev^")
 			or die_error(undef, "Open git-rev-parse failed");
 		my $parent_commit = <$dd>;
 		close $dd;
-- 
1.5.6.rc1