Refactor code to not use extract()/compact()

lib/Cake/Network/Email/CakeEmail.php

@@ -1065,16 +1065,21 @@ public function send($content = null) {
 
 		$contents = $this->transportClass()->send($this);
 		if (!empty($this->_config['log'])) {
-			$level = LOG_DEBUG;
-			$scope = 'email';
+			$config = array(
+				'level' => LOG_DEBUG,
+				'scope' => 'email'
+			);
 			if ($this->_config['log'] !== true) {
 				if (!is_array($this->_config['log'])) {
 					$this->_config['log'] = array('level' => $this->_config['log']);
 				}
-				$this->_config['log'] = array_merge(compact('level', 'scope'), $this->_config['log']);
-				extract($this->_config['log']);
+				$config = array_merge($config, $this->_config['log']);
 			}
-			CakeLog::write($level, PHP_EOL . $contents['headers'] . PHP_EOL . $contents['message'], $scope);
+			CakeLog::write(
+				$config['level'],
+				PHP_EOL . $contents['headers'] . PHP_EOL . $contents['message'],
+				$config['scope']
+			);
 		}
 		return $contents;
 	}