release: Work around Git tag name limitation

Fixes:

    fatal: 'lzip/1.22~rc3-1' is not a valid tag name.

1 files changed, 1 insertions, 0 deletions

diff --git a/release b/release
index 871cb4a..0b33aca 100755
--- a/release
+++ b/release
@@ -10,4 +10,5 @@ sed '/^ -- .*  /{ s/^\( -- .*  \).*$/\1'"$(LC_ALL='POSIX' date \
 	'+%a, %d %b %Y %H:%M:%S %z')"'/; :l; n; b l; };' changelog >changelog~
 mv changelog~ changelog
 git commit -m "changelog: Release ${src} ${ver}" -- changelog
+ver="$(printf '%s' "${ver}" | tr '~' '.')"
 git tag "${src}/${ver}" HEAD