Eradicate all the ptrdiff_ts in span left over from applying P1227. A couple of other minor cleanups. NFC
llvm-svn: 355481
diff --git a/libcxx/test/std/containers/views/span.cons/span.pass.cpp b/libcxx/test/std/containers/views/span.cons/span.pass.cpp
index 74da3fc..62f8b9d 100644
--- a/libcxx/test/std/containers/views/span.cons/span.pass.cpp
+++ b/libcxx/test/std/containers/views/span.cons/span.pass.cpp
@@ -10,7 +10,7 @@
// <span>
-// template<class OtherElementType, ptrdiff_t OtherExtent>
+// template<class OtherElementType, size_t OtherExtent>
// constexpr span(const span<OtherElementType, OtherExtent>& s) noexcept;
//
// Remarks: This constructor shall not participate in overload resolution unless: