Update to multistreamer 5.2.2

Author: jprjr

Dockerfile

@@ -7,7 +7,7 @@ ARG NGINX_LUA_VER=0.10.7
 ARG NGINX_RTMP_VER=1.1.10
 ARG NGINX_STREAM_LUA_VER=e527417c5d04da0c26c12cf4d8a0ef0f1e36e051
 ARG LUAROCKS_VER=2.4.2
-ARG MULTISTREAMER_VER=5.2.1
+ARG MULTISTREAMER_VER=5.2.2
 
 RUN apk add --no-cache \
     gcc \