Use "exec" when executing SVN with user-provided arguments,

to avoid running SVN multiple times with command lines like the
following:

svn co --depth empty svn+ssh://svn.freebsd.org/ports/head ports

Reported by:	ak@ (on IRC)

1 files changed, 2 insertions, 2 deletions

diff --git a/Tools/scripts/psvn b/Tools/scripts/psvn
index 402aded6d60c..4ddc5e981a2a 100755
--- a/Tools/scripts/psvn
+++ b/Tools/scripts/psvn
@@ -181,10 +181,10 @@ for opt ; do
 		setprop "${files}"
 
 		eval "set -- $savedargs"
-		"${SVN}" "$@"
+		exec "${SVN}" "$@"
 	;;
 	*)
-		"${SVN}" "$@"
+		exec "${SVN}" "$@"
 	;;
     esac
 done