Fix a build error with the epoller.
Fix a build error with the epoller.

ld3300/ola,nightrune/ola,ld3300/ola,nightrune/ola,nightrune/ola,nightrune/ola,ld3300/ola,ld3300/ola,ld3300/ola,ld3300/ola,nightrune/ola,nightrune/ola,ld3300/ola,nightrune/ola