[libcxx] [test] D27023: Fix MSVC warning C4389 "signed/unsigned mismatch", part 10/12.

Add static_cast<int>. In these cases, the values are guaranteed to be small-ish,
and they're being compared to int elements.

test/std/containers/sequences/deque/deque.capacity/access.pass.cpp
Use int instead of unsigned to iterate from 0 to 10.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@288747 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/algorithms/alg.modifying.operations/alg.move/move.pass.cpp

@@ -53,7 +53,7 @@ test1()
     OutIter r = std::move(InIter(ia), InIter(ia+N), OutIter(ib));
     assert(base(r) == ib+N);
     for (unsigned i = 0; i < N; ++i)
-        assert(*ib[i] == i);
+        assert(*ib[i] == static_cast<int>(i));
 }
 
 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES