bugfix storing/changing CachePeer for 'in-transaction' state

Author: AlexeyDsov

core/Cache/Cache.class.php

@@ -58,14 +58,6 @@ public static function me()
 			self::$peer = $peer;
 		}
 
-		/**
-		 * @return CachePeer 
-		 */
-		public static function getPeer()
-		{
-			return self::$peer;
-		}
-		
 		/* void */ public static function setDefaultWorker($worker)
 		{
 			Assert::classExists($worker);

core/DB/DB.class.php

@@ -135,7 +135,7 @@ public function begin(
 
 			$this->transaction = true;
 
-			$this->outOfTransactionCachePeer = Cache::getPeer();
+			$this->outOfTransactionCachePeer = Cache::me();
 			Cache::setPeer(new RuntimeMemory());
 
 			return $this;