transports: http: reset `connected` flag when closing transport
transports: http: reset `connected` flag when closing transport

Corillian/libgit2,stewid/libgit2,stewid/libgit2,stewid/libgit2,Corillian/libgit2,Corillian/libgit2,Corillian/libgit2,stewid/libgit2,Corillian/libgit2,Corillian/libgit2,stewid/libgit2,stewid/libgit2