MCS: Fix the fix for the output file name

Romain Tartière pointed out that I applied the wrong patch for the MCS
-out: argument parsing, hopefully that should be good this time.

See https://bugzilla.gnome.org/show_bug.cgi?id=592587#c20 for details

1 files changed, 1 insertions, 1 deletions

diff --git a/shave/shave.in b/shave/shave.in
index 2456787..60df177 100644
--- a/shave/shave.in
+++ b/shave/shave.in
@@ -57,7 +57,7 @@ while test "$#" -gt 0; do
         preserved_args="$preserved_args $opt"
         ;;
     -out:*|/out:*)
-        lt_output="${opt:=5}"
+        lt_output="${opt#-out:}"
         preserved_args="$preserved_args $opt"
         ;;
     *)