ParamProcessorInstanceError

Relates to https://github.com/JeroenDeDauw/ParamProcessor/pull/25

First #info use

{{#info: {{#ask: ParamProcessorInstanceError |?Has text }} }}

Leads to a fatal error info.

A fatal error occurred in the #info parser function

Second #info use

{{#info: message={{#ask: [[ParamProcessorInstanceError]] |?Has text }} }}

Should not lead to a fatal error info.

<table class="sortable wikitable smwtable"><th> </th><th class="Has-text">Has text</th><tr data-row-number="1" class="row-odd"><td class="smwtype_wpg">ParamProcessorInstanceError</td><td class="Has-text smwtype_txt"></td></tr></table>