make sure we publish to rolling

MOBILE/ios/createpodspecs

@@ -3,6 +3,13 @@ set -euo pipefail
 __version=$(date -u +%Y.%m.%d-%H%M%S)
 __release=$(git describe --tags || echo '0.0.0-dev')
 
+# determine whether we're publishing to a release or to rolling
+#
+# when publishing to rolling the __release variable is like: 'v3.19.0-alpha-27-g4678578b'
+if ! [[ $__release =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-[a-z]+)$ ]]; then
+	__release=rolling
+fi
+
 for name in libcrypto libevent libssl libtor libz oonimkall; do
 	cat ./MOBILE/ios/${name}-template.podspec | sed -e "s/@VERSION@/$__version/g" \
 		-e "s/@RELEASE@/$__release/g" >./MOBILE/ios/${name}.podspec