[turbofan] Fix VectorSlotPair printer

Bug: v8:7127
Change-Id: I9081710445bf44e1af18e8f254f373c5736792a5
Reviewed-on: https://chromium-review.googlesource.com/832477Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50189}

src/vector-slot-pair.cc

@@ -26,8 +26,7 @@ bool operator!=(VectorSlotPair const& lhs, VectorSlotPair const& rhs) {
 
 std::ostream& operator<<(std::ostream& os, const VectorSlotPair& pair) {
   if (pair.IsValid()) {
-    return os << "VectorSlotPair(" << pair.vector().address() << pair.slot()
-              << ")";
+    return os << "VectorSlotPair(" << pair.slot() << ")";
   }
   return os << "VectorSlotPair(INVALID)";
 }