Wrong evaluation of parameter name if using a hash containing variable as default value

[jvdmr]

Similar issue to #30, but with a hash default instead of an array.

Example:

# @summary example class
#
# @param parameter_1
# @param parameter_2
# @param parameter_3
# @param parameter_4
# @param parameter_5
# @param parameter_6
# @param parameter_7
# @param parameter_8
#
class example (
        Hash $parameter_1 = $variable1,
        Hash $parameter_2 = { $variable2, },
        Hash $parameter_3 = { $variable3, 'string1', },
        Hash $parameter_4 = {
                $variable4,
                'string1',
        },
        Hash $parameter_5 = { $variable5, $variable6, 'string1', },
        Hash $parameter_6 = { $variable7, 'string1', $variable8, },
        Hash $parameter_7 = { 'string1', $variable9, },
        Hash $parameter_8 = {
                'string1',
                $variable10,
                'string2',
        },
) {
        # foo
}