xcb_aux.c:61:10: warning: implicit conversion loses integer precision:
 'int' to 'uint8_t' (aka 'unsigned char') [-Wimplicit-int-conversion]
  return depth;
  ~~~~~~ ^~~~~
xcb_aux.c:343:14: warning: implicit conversion loses integer precision:
 'int' to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
    *red = r << n;
         ~ ~~^~~~
xcb_aux.c:344:16: warning: implicit conversion loses integer precision:
 'int' to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
    *green = g << n;
           ~ ~~^~~~
xcb_aux.c:345:15: warning: implicit conversion loses integer precision:
 'int' to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]
    *blue = b << n;
          ~ ~~^~~~

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>