Core: fixed possible use of an uninitialized variable.
Core: fixed possible use of an uninitialized variable.

The call to ngx_sock_ntop() in ngx_connection_local_sockaddr() might be
performed with the uninitialized "len" variable.  The fix is to initialize
variable to the size of corresponding socket address type.

The issue was introduced in commit 05ba5bce31e0.

firebase/nginx,firebase/nginx,hy0kl/nginx,firebase/nginx,hy0kl/nginx,firebase/nginx,hy0kl/nginx