headerParseParamListStrict
A strict version of func@header_parse_param_list that bails out if there are duplicate parameters.
Note that this function will treat RFC5987-encoded parameters as duplicated if an ASCII version is also present. For header fields that might contain RFC5987-encoded parameters, use func@header_parse_param_list instead.
Return
a #GHashTable of list elements, which can be freed with func@header_free_param_list or null if there are duplicate elements.
Parameters
header
a header value