human
Solve the following python programming problem given the following code:
def clean_lead_ws_description(metadata, field_name) : 
    " Sometimes the metadata fields are a mess, this function is intended to remove the leading
    extra space some authors add in front of the 'description' field and to handle some other
    field cases.

    :param metadata: the metadata text
    :param field_name: the name of the field, like 'description'
    :rtype: string
    :return: the processed metadata
    " 
    def calc_leading(line) : 
        return (len (line) - len (line.lstrip ())) 
def most_common(lst) : 
        return max (set (lst), key = lst.count) 
if (field_name.lower () == 'description') : 
        leading_ws_count = [calc_leading (line) for line in metadata.splitlines ()] 
        most_common_ws_count = most_common (calc_leading) 
        strip_split = metadata.strip ().splitlines () 
        return '
'.join ([(line [most_common_ws_count :] if line.startswith ((' ' * most_common_ws_count)) else line) for line in strip_split]) 
else : 
        return ' '.join ([line.strip () for line in metadata.splitlines ()]) 

    
    

    Fix the buggy line: most_common_ws_count = most_common (calc_leading)
assistant
#Here is Python program to fix the buggy line: most_common_ws_count = most_common (calc_leading)
.

most_common_ws_count = most_common (leading_ws_count)