NetBSD 9.0 RC1 compile error

[6bone]

Hello,

with enabled DEBUG:
--- if_ena.o ---
/usr/src/sys/dev/pci/if_ena.c: In function 'ena_request_io_irq':
/usr/src/sys/dev/pci/if_ena.c:2089:7: error: unused variable 'irq_slot' 
[-Werror=unused-variable]
   int irq_slot = i + irq_off;
       ^~~~~~~~


Regards
Uwe