[test] Silence unused parameter/typedef warnings

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@300575 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/language.support/support.exception/except.nested/throw_with_nested.pass.cpp

@@ -113,7 +113,7 @@ int main()
             std::throw_with_nested("String literal");
             assert(false);
         }
-        catch (const char * s)
+        catch (const char *)
         {
         }
     }

test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.runtime.pass.cpp

@@ -81,11 +81,9 @@ void test_sfinae() {
   using DB = NCConvertingDeleter<B[]>;
   using UA = std::unique_ptr<A[]>;
   using UAC = std::unique_ptr<const A[]>;
-  using UB = std::unique_ptr<B[]>;
   using UAD = std::unique_ptr<A[], DA>;
   using UACD = std::unique_ptr<const A[], DAC>;
 
-  using UBD = std::unique_ptr<B[], DB>;
   { // cannot move from an lvalue
     static_assert(std::is_assignable<UAC, UA&&>::value, "");
     static_assert(!std::is_assignable<UAC, UA&>::value, "");

test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/default.pass.cpp

@@ -46,7 +46,7 @@ struct NonDefaultDeleter {
 template <class ElemType>
 void test_sfinae() {
 #if TEST_STD_VER >= 11
-  { // the constructor does not participate in overload resultion when
+  { // the constructor does not participate in overload resolution when
     // the deleter is a pointer type
     using U = std::unique_ptr<ElemType, void (*)(void*)>;
     static_assert(!std::is_default_constructible<U>::value, "");