MINOR: quic_sock: un-statify quic_conn_sock_fd_iocb()

This one is printed as the iocb in the "show fd" output, and arguably
this wasn't very convenient as-is:
    293 : st=0x000123(cl heopI W:sRa R:sRA) ref=0 gid=1 tmask=0x8 umask=0x0 prmsk=0x8 pwmsk=0x0 owner=0x7f488487afe0 iocb=0x50a2c0(main+0x60f90)

Let's unstatify it and export it so that the symbol can now be resolved
from the various points that need it.
3 files changed