create-release-branches.bash (fixup)

create-release-branches.bash

@@ -6,7 +6,7 @@ for v in 1.25 1.26 1.27 1.28 1.29 1.30 1.31 ; do
   BRANCH_NAME="release-${v}"
   git co -b $BRANCH_NAME;
   sed -i.orig "s/tag: v.*/tag: v$v/g" vendir.yml
-  diff vendir.yml vendir.yml.orig
+  ! diff vendir.yml vendir.yml.orig
   git add vendir.yml
   git commit -m "set up release for version $v"
   git push --set-upstream origin $BRANCH_NAME