Merge pull request #2160 from FHenry/3.6

 	[ bug #1749 ] Undefined $mailchimp

ChangeLog

@@ -18,6 +18,7 @@ Fix: Paypal link were broken dur to SSL v3 closed.
 - Fix: [ bug #1595 ] Selected boolean extrafield in intervention creation page, does not save state
 - Fix: Show sender Country on PDF docs when sender Country <> receiver Country
 - Fix: [ bug #1624 ] Use lowest buying price for margin when selling with POS
+- Fix: [ bug #1749 ] Undefined $mailchimp
 
 ***** ChangeLog for 3.6.1 compared to 3.6.* *****
 For users:

htdocs/projet/element.php

@@ -212,7 +212,7 @@ if ($action=="addelement")
 	$elementselectid = GETPOST("elementselect");
 	$result=$project->update_element($tablename, $elementselectid);
 	if ($result<0) {
-		setEventMessage($mailchimp->error,'errors');
+		setEventMessage($project->error,'errors');
 	}
 }