Description:
------------
When retrieving spatial coordinates from a point column using the x() and y() sql functions, the mysqli fetch_array(MYSQLI_ASSOC) method return integers instead of floats if using the MYSQLI_OPT_INT_AND_FLOAT_NATIVE option and locale that don't have a fullstop as decimal separator.

Test script:
---------------
setlocale(LC_ALL, "de_DE.UTF-8");
$m = new mysqli();
$m->options(MYSQLI_OPT_INT_AND_FLOAT_NATIVE, true);
$result = $m->query("SELECT Y(Point(56.7, 53.34))");
var_dump($result->fetch_array(MYSQLI_ASSOC));

Expected result:
----------------
array(1) {
  'Y(Point(56.7, 53.34))' =>
  double(53.34)
}


Actual result:
--------------
array(1) {
  'Y(Point(56.7, 53.34))' =>
  double(53)
}