[fix bug 1382208] Fix signal declaration in periodic tasks.
[fix bug 1382208] Fix signal declaration in periodic tasks.

Mte90/remo,Mte90/remo,mozilla/remo,flamingspaz/remo,Mte90/remo,mozilla/remo,Mte90/remo,akatsoulas/remo,flamingspaz/remo,akatsoulas/remo,mozilla/remo,flamingspaz/remo,mozilla/remo,akatsoulas/remo,akatsoulas/remo,flamingspaz/remo