quic: fix up coverity warning in quic/session.cc · dnalborczyk/node@971af4b

There is not enough space on the disk. : 'D:\a\_temp\_runner_file_commands\add_path_6a0e7d89-984c-4f40-b930-77522e56d271'

There is not enough space on the disk. : 'D:\a\_temp\_runner_file_commands\add_path_622059b7-06b6-4a19-a2e8-8a96ec88623a'

You are running out of disk space. The runner will stop working when the machine runs out of disk space. Free space left: 89 MB