Fix several compile errors

[skal65535]

src/search_inter.c:1210: implicit conversion from 'int' to 'int16_t' was truncating constants.
src/intra.c:511: const qualifier discarded

[Jovasa]

The first issue is really not fixed by changing the return type to int32_t, since it is anyways always assigned to int16_t variable. It would require changing mv_t from int16_t to int32_t and making sure everywhere in the code that there are no old lingering code using int16_t instead of mv_t. Unless you want to do that I can still merge this one as is and somebody from our team will do the proper fix at some point.

[skal65535]

hmm... get_scaled_mv() is only called from search_inter.c:1240 line, and the result (now in int32_t) is assigned to a vector2d_t:x / y field (mv_cand->x and mv_cand->y), which are both 'int' type (see cu.h:135).
The fix looks ok to me.

[Jovasa]

Here

uvg266/src/search_inter.c

Line 1436 in c8314d3

unipred_pu->inter.mv[ref_list][0] = (mv_t)best_mv.x;

the result of that function is finally (cast without clipping) and assigned to mv_t aka int16_t. But like I said if you don't feel like going through the whole inter search to fix this I can merge this as is.