function.c: Quiet some compiler warnings
function.c: Quiet some compiler warnings

As far as I can see GCC simply isn't inferring that one boolean
is always set in the failure flow path, but initializing these
anyways is good practice.

mtwebster/cjs,djdeath/gjs,djdeath/gjs,joeshaw/gjs,endlessm/gjs,joeshaw/gjs,endlessm/gjs,joeshaw/gjs,magcius/gjs,mtwebster/cjs,pixunil/cjs,endlessm/gjs,mtwebster/cjs,djdeath/gjs,pixunil/cjs,mtwebster/cjs,joeshaw/gjs,magcius/gjs,djdeath/gjs,magcius/gjs,mtwebster/cjs,pixunil/cjs,pixunil/cjs,djdeath/gjs,magcius/gjs,magcius/gjs,pixunil/cjs,endlessm/gjs,joeshaw/gjs,endlessm/gjs