improve temp directory handling in oauth

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@1658 44740490-163a-0410-bde0-09ae8108e29a

modules/oauth/lib/OAuthStore.php

@@ -17,10 +17,10 @@ class sspmod_oauth_OAuthStore extends OAuthDataStore {
 			
 		if (!file_exists($path)) {
 			mkdir($path);
-		} else {
-			if (!is_dir($path)) 
-				throw new Exception('OAuth Storage Path [' . $path . '] is not a valid directory');
 		}
+		if (!is_dir($path)) 
+			throw new Exception('OAuth Storage Path [' . $path . '] is not a valid directory');
+			
 		$this->path = $path;
     }