Merge pull request #386 from rmccue/feature/fix-php-cross-version-com…

…pat-issue

Fix PHP cross-version compatibility issue (PHP 7)

library/Requests.php

@@ -187,7 +187,8 @@ protected static function get_transport($capabilities = array()) {
 
 		// Don't search for a transport if it's already been done for these $capabilities
 		if (isset(self::$transport[$cap_string]) && self::$transport[$cap_string] !== null) {
-			return new self::$transport[$cap_string]();
+			$class = self::$transport[$cap_string];
+			return new $class();
 		}
 		// @codeCoverageIgnoreEnd
 
@@ -214,7 +215,8 @@ protected static function get_transport($capabilities = array()) {
 			throw new Requests_Exception('No working transports found', 'notransport', self::$transports);
 		}
 
-		return new self::$transport[$cap_string]();
+		$class = self::$transport[$cap_string];
+		return new $class();
 	}
 
 	/**#@+