CRM_Core_BAO_Block - Fix API regressions

CRM/Core/BAO/Block.php

@@ -434,8 +434,10 @@ class CRM_Core_BAO_Block {
    * @static
    */
   public static function handlePrimary(&$params, $class) {
-    $coreTables = CRM_Core_DAO_AllCoreTables::getCoreTables();
-    $table = array_search($class, $coreTables);
+    $table = CRM_Core_DAO_AllCoreTables::getTableForClass($class);
+    if (!$table) {
+      throw new API_Exception("Failed to locate table for class [$class]");
+    }
 
     // contact_id in params might be empty or the string 'null' so cast to integer
     $contactId = (int) CRM_Utils_Array::value('contact_id', $params);