soup-session-async:fixed a connection starvation issue
soup-session-async:fixed a connection starvation issue

Trying to cleanup connections ASAP could potentially lead to starvation of the
messages in the queue tail if we issue a lot of connections in a short period
of time to a reduced set of servers. As we are able to notice connections
closed by servers without even running the cleanup connections code, trying to
prune connections so quickly is not that important now.

https://bugzilla.gnome.org/show_bug.cgi?id=639768

fanc999/libsoup,Distrotech/libsoup,fanc999/libsoup,fanc999/libsoup,ahmedammar/platform_external_gst_libsoup,ahmedammar/platform_external_gst_libsoup,jwendell/libsoup,fanc999/libsoup,jwendell/libsoup,jwendell/libsoup,jwendell/libsoup,ahmedammar/platform_external_gst_libsoup,Distrotech/libsoup,fanc999/libsoup,Distrotech/libsoup,jwendell/libsoup,Distrotech/libsoup,Distrotech/libsoup