javacodegen scope check: chop off the correct end of the fragment

Author: mr-c

schema_salad/java/main_utils/LoadingOptions.java

@@ -94,7 +94,7 @@ public String expandUrl(
       final ArrayList<String> sp = new ArrayList(Arrays.asList(splitbase.fragment.split("/")));
       int n = scopedRef;
       while (n > 0 && sp.size() > 0) {
-        sp.remove(0);
+        sp.remove(sp.size()-1);
         n -= 1;
       }
       sp.add(url);