[over.best.ics] Adjust example for [over.match.list] case

Author: jensmaurer

source/overloading.tex

@@ -1983,10 +1983,10 @@
   struct A { operator int(); };
   Y y1 = A();       // error: \tcode{A::operator int()} is not a candidate
 
-  struct X { };
+  struct X { X(); };
   struct B { operator X(); };
   B b;
-  X x({b});         // error: \tcode{B::operator X()} is not a candidate
+  X x{{b}};         // error: \tcode{B::operator X()} is not a candidate
 \end{codeblock}
 \end{example}