Stop calling limit() twice on the same data.

DboSource::limit() now follows its documented input types, passing an
already formatted LIMIT string will result in LIMIT 0. Remove useless
array merging as well.

lib/Cake/Model/Datasource/DboSource.php

@@ -1529,7 +1529,6 @@ public function generateAssociationQuery(Model $model, $linkModel, $type, $assoc
 		if (empty($assocData['offset']) && !empty($assocData['page'])) {
 			$assocData['offset'] = ($assocData['page'] - 1) * $assocData['limit'];
 		}
-		$assocData['limit'] = $this->limit($assocData['limit'], $assocData['offset']);
 
 		switch ($type) {
 			case 'hasOne':
@@ -1555,7 +1554,6 @@ public function generateAssociationQuery(Model $model, $linkModel, $type, $assoc
 						'alias' => $association,
 						'group' => null
 					));
-					$query += array('order' => $assocData['order'], 'limit' => $assocData['limit']);
 				} else {
 					$join = array(
 						'table' => $linkModel,
@@ -1586,6 +1584,7 @@ public function generateAssociationQuery(Model $model, $linkModel, $type, $assoc
 					'alias' => $association,
 					'order' => $assocData['order'],
 					'limit' => $assocData['limit'],
+					'offset' => $assocData['offset'],
 					'group' => null
 				);
 			break;
@@ -1613,6 +1612,7 @@ public function generateAssociationQuery(Model $model, $linkModel, $type, $assoc
 				$query = array(
 					'conditions' => $assocData['conditions'],
 					'limit' => $assocData['limit'],
+					'offset' => $assocData['offset'],
 					'table' => $this->fullTableName($linkModel),
 					'alias' => $association,
 					'fields' => array_merge($this->fields($linkModel, $association, $assocData['fields']), $joinFields),