Issue #3304884 by poker10: [D7 PHP 8.2] Deprecated function: Creation of...

Issue #3304884 by poker10: [D7 PHP 8.2] Deprecated function: Creation of dynamic property MergeQuery::$condition

includes/database/query.inc

@@ -1287,6 +1287,15 @@ class MergeQuery extends Query implements QueryConditionInterface {
    */
   protected $conditionTable;
 
+  /**
+   * The condition object for this query.
+   *
+   * Condition handling is handled via composition.
+   *
+   * @var DatabaseCondition
+   */
+  protected $condition;
+
   /**
    * An array of fields on which to insert.
    *