QAnyStringView: move the two assertions to a central place

Move the assertions to qtypes.cpp, next to where one of them already
existed.

Change-Id: I51d12ccdc56c4ad2af07fffd172dae7c49d78273
Reviewed-by: Marc Mutz <marc.mutz@qt.io>

src/corelib/global/qtypes.cpp

@@ -392,6 +392,7 @@ static_assert(std::numeric_limits<float>::radix == 2,
 static_assert(sizeof(size_t) == sizeof(void *), "size_t and a pointer don't have the same size");
 static_assert(sizeof(size_t) == sizeof(qsizetype)); // implied by the definition
 static_assert((std::is_same<qsizetype, qptrdiff>::value));
+static_assert(std::is_same_v<std::size_t, size_t>);
 
 // Check that our own typedefs are not broken.
 static_assert(sizeof(qint8) == 1, "Internal error, qint8 is misdefined");

src/corelib/text/qanystringview.h

@@ -33,8 +33,6 @@ public:
     typedef qptrdiff difference_type;
     typedef qsizetype size_type;
 private:
-    static_assert(std::is_same_v<std::size_t, size_t>);
-    static_assert(sizeof(size_t) == sizeof(qsizetype));
     static constexpr size_t SizeMask = (std::numeric_limits<size_t>::max)() / 4;
 #if QT_VERSION >= QT_VERSION_CHECK(7, 0, 0) || defined(QT_BOOTSTRAPPED)
     static constexpr int SizeShift = 2;