BUG/MINOR: h3: fix crash on h3s alloc failure

Do not emit a CONNECTION_CLOSE on h3s allocation failure. Indeed, this
causes a crash as the calling function qcs_new() will also try to emit a
CONNECTION_CLOSE which triggers a BUG_ON() on qcc_emit_cc().

This was reproduced using -dMfail.

This should be backported up to 2.7.
1 file changed