fix Windows path

Author: vladak

opengrok-indexer/src/main/java/org/opengrok/indexer/index/IndexDatabase.java

@@ -1493,6 +1493,7 @@ void indexDown(File dir, String parent, IndexDownArgs args) throws IOException {
      */
     private void processFileIncremental(IndexDownArgs args, File file, String path) throws IOException {
         if (uidIter != null) {
+            path = Util.fixPathIfWindows(path);
             // Traverse terms until reaching one that matches the path of given file.
             while (uidIter != null && uidIter.term() != null
                     && uidIter.term().compareTo(emptyBR) != 0