Firmware 13.42, run natively, checks six requests' arguments before the
context; a request that passes them still throws, because the run could
not show how the module completes it. LeaveRoom finds no session, the
local getters report the context as not started, and the signaling calls
find no peer. The signaling port is stored and reported.
sceNpMatching2SignalingGetConnectionStatus reports every member inactive
for a known context, since no room is joined offline, and leaves the peer
address and port untouched; a null status pointer throws.
sceNpMatching2AbortContextStart returns NOT_INITIALIZED before
initialization and 0 afterwards. Checks follow shadPS4, with RPCS3's
differences recorded in the technical debt entry.
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