src: Replace g_abort with abort in unicode-parser.c
src: Replace g_abort with abort in unicode-parser.c

BUG=https://github.com/ibus/ibus/issues/2142

ibus/ibus,ibus/ibus,fujiwarat/ibus,ibus/ibus,fujiwarat/ibus,fujiwarat/ibus,ibus/ibus,fujiwarat/ibus