elm_sys_notify.c: fixed memory illegal access issue spotted by coverity. CID 1039984.
elm_sys_notify.c: fixed memory illegal access issue spotted by coverity. CID 1039984.

FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,tasn/elementary,FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,rvandegrift/elementary,tasn/elementary,rvandegrift/elementary