Call on_stream_close_callback for stream in NGHTTP2_STREAM_INITIAL state
Call on_stream_close_callback for stream in NGHTTP2_STREAM_INITIAL state

We call on_stream_close_callback even if stream->state is
NGHTTP2_STREAM_INITIAL. This will happen while sending request
HEADERS, a local endpoint receives RST_STREAM for that
stream. It may be PROTOCOL_ERROR, but without notifying stream
closure will hang the stream in a local endpoint.

icing/nghttp2,thinred/nghttp2,ohyeah521/nghttp2,wzyboy/nghttp2,dxq-git/nghttp2,syohex/nghttp2,minhoryang/nghttp2,shines77/nghttp2,wzyboy/nghttp2,bxshi/nghttp2,thinred/nghttp2,dxq-git/nghttp2,yuki-kodama/nghttp2,lukw00/nghttp2,icing/nghttp2,bxshi/nghttp2,ohyeah521/nghttp2,mixianghang/nghttp2,icing/nghttp2,kelbyludwig/nghttp2,syohex/nghttp2,yuki-kodama/nghttp2,wzyboy/nghttp2,dxq-git/nghttp2,icing/nghttp2,shines77/nghttp2,mixianghang/nghttp2,lukw00/nghttp2,dxq-git/nghttp2,thinred/nghttp2,lukw00/nghttp2,mixianghang/nghttp2,thinred/nghttp2,bxshi/nghttp2,syohex/nghttp2,serioussam/nghttp2,mixianghang/nghttp2,serioussam/nghttp2,syohex/nghttp2,minhoryang/nghttp2,mixianghang/nghttp2,ohyeah521/nghttp2,minhoryang/nghttp2,thinred/nghttp2,serioussam/nghttp2,syohex/nghttp2,wzyboy/nghttp2,yuki-kodama/nghttp2,minhoryang/nghttp2,shines77/nghttp2,syohex/nghttp2,dxq-git/nghttp2,yuki-kodama/nghttp2,thinred/nghttp2,minhoryang/nghttp2,bxshi/nghttp2,shines77/nghttp2,lukw00/nghttp2,lukw00/nghttp2,serioussam/nghttp2,bxshi/nghttp2,minhoryang/nghttp2,ohyeah521/nghttp2,wzyboy/nghttp2,ohyeah521/nghttp2,kelbyludwig/nghttp2,icing/nghttp2,kelbyludwig/nghttp2,kelbyludwig/nghttp2,bxshi/nghttp2,kelbyludwig/nghttp2,serioussam/nghttp2,shines77/nghttp2,icing/nghttp2,ohyeah521/nghttp2,wzyboy/nghttp2,lukw00/nghttp2,dxq-git/nghttp2,mixianghang/nghttp2,serioussam/nghttp2,serioussam/nghttp2,yuki-kodama/nghttp2,yuki-kodama/nghttp2,icing/nghttp2,shines77/nghttp2,thinred/nghttp2,wzyboy/nghttp2,kelbyludwig/nghttp2,lukw00/nghttp2