scripts/trace.pl: Fix context id recycling

Last refactoring introduced a copy and paste error, fix it.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reported-by: John Harrison <John.C.Harrison@intel.com>
Cc: John Harrison <John.C.Harrison@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
1 file changed