CRM-12394

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* CRM-12394: Typo in "Name Tent" event badge class causes fatal error
  http://issues.civicrm.org/jira/browse/CRM-12394

CRM/Event/Badge/NameTent.php

@@ -45,7 +45,7 @@ class CRM_Event_Badge_NameTent extends CRM_Event_Badge {
     $ph            = 210;
     $this->lMargin = 10;
     $this->tMargin = 0;
-    $w             = $pw - 2 * $this->lMarging;
+    $w             = $pw - 2 * $this->lMargin;
     $h             = $ph - 2 * $this->tMargin;
     $this->format  = array(
       'name' => 'A4 horiz', 'paper-size' => 'A4', 'metric' => 'mm', 'lMargin' => 0,