BUG/MINOR: mux-quic: handle properly alloc error in qcs_new()

Use qcs_free() on allocation failure in qcs_new() This ensures that all
qcs content is properly deallocated and prevent memleaks. Most notably,
qcs instance is now removed from qcc tree.

This bug is labelled as MINOR as it occurs only on qcs allocation
failure due to memory exhaustion.

This must be backported up to 2.6.
1 file changed