Surpress make failure if the old build script didn't support AMO

pde · pde · commit 6fb05ad00dda · 2015-04-23T13:08:19.000-07:00
Somehow make was obtaining the return value from this cp command and erroring
on it.
diff --git a/makexpi.sh b/makexpi.sh
@@ -44,7 +44,9 @@ if [ -n "$1" ] && [ "$2" != "--no-recurse" ] && [ "$1" != "--fast" ] ; then
   cd ..
   XPI_NAME="$APP_NAME-$1"
   cp $SUBDIR/pkg/$XPI_NAME.xpi pkg/
-  cp $SUBDIR/pkg/$XPI_NAME-amo.xpi pkg/
+  if ! cp $SUBDIR/pkg/$XPI_NAME-amo.xpi pkg/ 2> /dev/null ; then
+    echo Old version does not support AMO
+  fi
   rm -rf $SUBDIR
   exit 0
 fi
