Fix for local paths with Unix / Windows Support

Second try at fixing issue less#1272, now with added Unix support.

Author: losnir

lib/less/browser.js

@@ -214,7 +214,7 @@ function extractUrlParts(url, baseUrl) {
         if (!baseUrlParts) {
             throw new Error("Could not parse page url - '"+baseUrl+"'");
         }
-        urlParts[1] = baseUrlParts[1] || "";
+        urlParts[1] = urlParts[1] || baseUrlParts[1] || "";
         if (!urlParts[2]) {
             urlParts[3] = baseUrlParts[3] + urlParts[3];
         }