Turn a "panic: non-decreasing id" into an error printf.  This seems to be caused by a metadata corruption that occurs quite often after unplugging a pendrive during write activity.
Turn a "panic: non-decreasing id" into an error printf.  This seems
to be caused by a metadata corruption that occurs quite often after
unplugging a pendrive during write activity.

Reviewed by:	scottl
Approved by:	rwatson (mentor)
Sponsored by:	FreeBSD Foundation

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase