swscale: Fix aarch64 and i386 compilation failures
This unbreaks builds after c1a0e65763,
which broke with errors like
src/libswscale/aarch64/rgb2rgb.c:66:25: error: incompatible function pointer types assigning to 'void (*)(const uint8_t *, uint8_t *, uint8_t *, uint8_t *, int, int, int, int, int, const int32_t *)' (aka 'void (*)(const unsigned char *, unsigned char *, unsigned char *, unsigned char *, int, int, int, int, int, const int *)') from 'void (const uint8_t *, uint8_t *, uint8_t *, uint8_t *, int, int, int, int, int, int32_t *)' (aka 'void (const unsigned char *, unsigned char *, unsigned char *, unsigned char *, int, int, int, int, int, int *)') [-Wincompatible-function-pointer-types]
66 | ff_rgb24toyv12 = rgb24toyv12;
| ^ ~~~~~~~~~~~
and
src/libswscale/aarch64/swscale_unscaled.c:213:29: error: incompatible function pointer types assigning to 'SwsFunc' (aka 'int (*)(struct SwsContext *, const unsigned char *const *, const int *, int, int, unsigned char *const *, const int *)') from 'int (SwsContext *, const uint8_t *const *, const int *, int, int, const uint8_t **, const int *)' (aka 'int (struct SwsContext *, const unsigned char *const *, const int *, int, int, const unsigned char **, const int *)') [-Wincompatible-function-pointer-types]
213 | c->convert_unscaled = nv24_to_yuv420p_neon_wrapper;
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Martin Storsjö <martin@martin.st>
b9145fcab2