Description:
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The mysqli_fetch_fields dosen't take the correct field type for the ENUM and SET type.

Reproduce code:
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Create a table with a ENUM type with value like 'True', 'False' and default value to True.

do : $finfo = mysqli_fetch_field($result)

you will get : $finfo->type = 254 
So, a STRING. - MYSQLI_TYPE_STRING and with no default value.

Same thing for the set type.

Expected result:
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The $finfo->type 
should have 247 (MYSQLI_TYPE_ENUM) as value.

or 

248 (MYSQLI_TYPE_SET) as value for a SET type


Actual result:
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array(0) {
}