oops again

Author: duck2

vpr/src/route/route_tree.h

@@ -158,10 +158,10 @@ class RTRecIterator {
     }
     /** Compare the original root and the current stack top. */
     inline bool operator==(const RTRecIterator& rhs) {
-        if (_root != rhs._root) // root nodes aren't equal (most common case when rhs == end())
-            return false;
         if (_stack.empty() && rhs._stack.empty()) // both are end()
             return true;
+        if (_root != rhs._root) // root nodes aren't equal (most common case when rhs == end())
+            return false;
         if (_stack.empty() || rhs._stack.empty()) // only one of the stacks are empty
             return false;
         // true if same root nodes and same stack tops