git-svn: correctly display fatal() error messages

If I wanted to print $@, I'd pass $@ to fatal().  This looks like
a stupid typo on my part.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>

git-svn.perl

@@ -31,7 +31,7 @@
              'svn:entry:committed-date' => 1,
 );
 
-sub fatal (@) { print STDERR $@; exit 1 }
+sub fatal (@) { print STDERR @_; exit 1 }
 # If SVN:: library support is added, please make the dependencies
 # optional and preserve the capability to use the command-line client.
 # use eval { require SVN::... } to make it lazy load