Update ngx_rtmp_mpegts.c

Fixes for "warning C4244: '=' : conversion from 'uint64_t' to 'u_char', possible loss of data"
fixed compilation
Merge pull request #469 from itpp16/patch-1

Update ngx_rtmp_mpegts.c
added queue init
enabled static relay cleanup to fix static_relay+auto_push combination
Merge remote-tracking branch 'upstream/master' into internal