Silence a couple of 'unused variable' warnings in c++03 tests. No functional change

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@298582 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/auto_ptr.pass.cpp

@@ -86,6 +86,7 @@ int main()
             // Without rvalue references, ptr got copied into
             // the shared_ptr destructor and the copy was
             // destroyed during unwinding.
+            (void) raw_ptr; // silence 'unused variable' warning
             assert(A::count == 0);
             assert(B::count == 0);
 #endif

test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/unique_ptr.pass.cpp

@@ -80,6 +80,7 @@ int main()
             assert(B::count == 1);
             assert(ptr.get() == raw_ptr);
 #else
+            (void) raw_ptr; // silence 'unused variable' warning
             assert(A::count == 0);
             assert(B::count == 0);
             assert(ptr.get() == 0);