Fix overrides log

Summary: We were logging the just the Method pointers for overrides. This prints the actual methods.

Reviewed By: yuhshin-oss

Differential Revision: D48235940

fbshipit-source-id: 382140c7570c252abbdd4be889c73b65e620213c

source/CallGraph.cpp

@@ -877,7 +877,7 @@ std::ostream& operator<<(std::ostream& out, const CallTarget& call_target) {
     out << ", receiver_type=`" << show(call_target.receiver_type())
         << "`, overrides={";
     for (const auto* method : call_target.overrides()) {
-      out << "`" << method << "`, ";
+      out << "`" << method->show() << "`, ";
     }
     out << "}";
   }