action: simplify Check* functions Instead of using those t1 t2 variables, pass the final destinations directly (while making sure they are not modified in case of error). This also ensures the types are right, e.g. in CheckGroupField it should be int32_t, not xkb_layout_index_t (and indeed it takes a negation!). Signed-off-by: Ran Benita <ran234@gmail.com>