Fix export all contacts from search

'this' does not exist here and selecting export all contacts from actions dropdown causes a crash with undefined CRM_Contact_Selector_DataProcessorContactSearch::get()

@jaapjansma I wasn't completely certain where debug gets set. But $this->get() does not exist here so if debug is not set you will get a fatal error.

I am not so sure about this PR. I do think you have a type/mistake in CRM_Utils_Request...

@jaapjansma retrieveValue is a simpler version of retrieve so it is not a typo. But if you prefer I can use retrieve.

Ah ok. I did not know that

merged

mentioned in commit 43404a1b