Found a couple bugs in the test suite. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@272679 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/containers/unord/unord.multiset/unord.multiset.swap/swap_noexcept.pass.cpp

@@ -63,6 +63,7 @@ struct some_hash
     typedef T value_type;
     some_hash() {}
     some_hash(const some_hash&);
+    std::size_t operator()(const T&) const { return 0; }
 };
 
 template <class T>
@@ -71,6 +72,7 @@ struct some_hash2
     typedef T value_type;
     some_hash2() {}
     some_hash2(const some_hash2&);
+    std::size_t operator()(const T&) const { return 0; }
 };
 
 #if TEST_STD_VER >= 14

test/std/containers/unord/unord.set/unord.set.swap/swap_noexcept.pass.cpp

@@ -63,6 +63,7 @@ struct some_hash
     typedef T value_type;
     some_hash() {}
     some_hash(const some_hash&);
+    std::size_t operator()(const T&) const { return 0; }
 };
 
 template <class T>
@@ -71,6 +72,7 @@ struct some_hash2
     typedef T value_type;
     some_hash2() {}
     some_hash2(const some_hash2&);
+    std::size_t operator()(const T&) const { return 0; }
 };
 
 #if TEST_STD_VER >= 14

test/std/experimental/memory/memory.resource.aliases/header_unordered_set_synop.pass.cpp

@@ -60,7 +60,7 @@ int main()
         static_assert(std::is_same<StdSet, PmrSet>::value, "");
     }
     {
-        pmr::unordered_set<int, int> m;
+        pmr::unordered_set<int> m;
         assert(m.get_allocator().resource() == pmr::get_default_resource());
     }
     {
@@ -79,7 +79,7 @@ int main()
         static_assert(std::is_same<StdSet, PmrSet>::value, "");
     }
     {
-        pmr::unordered_multiset<int, int> m;
+        pmr::unordered_multiset<int> m;
         assert(m.get_allocator().resource() == pmr::get_default_resource());
     }
 }