BUG/MINOR: trace: Wrong displayed trace level

With commit a1f12746b ("MINOR: traces: add a new level "error" below
the "user" level") a new trace level was inserted, resulting in
shifting all exiting ones by one. But the levels reported in the
__trace() function were not updated accordingly, resulting in the
TRACE_LEVEL_DEVELOPER not to be properly reported anymore. This
patch fixes it by extending the number of levels to 6.

No backport is needed.
1 file changed