prevent deref of NIL if Dependencies section exists but is empty.

src/vpkJsonDepRetriever.Mod

@@ -367,6 +367,7 @@ BEGIN
         IF foundDepSection THEN
           WHILE rootObj # NIL DO
             depsValue := rootObj.value;
+            IF depsValue # NIL THEN
               IF depsValue IS Json.Obj THEN
                 singleDep := depsValue(Json.Obj);
                 WHILE singleDep # NIL DO
@@ -381,6 +382,7 @@ BEGIN
                 END;  (* End of inner WHILE loop for dependencies *)
                 RETURN depstrlist.Count;
               END;  (* End of IF depsValue IS Json.Obj *)
+            END;
             rootObj := rootObj.next;  (* Move to the next JSON object *)
           END;  (* End of WHILE rootObj # NIL loop *)
         ELSE