QStaticByteArrayMatcherBase: make dtor protected

Base class dtors should either be public and virtual or else protected
and non-virtual.

We don't want to model polymorphy, so protected and non-virtual it is.

Pick-to: 6.3
Change-Id: I3c545b01c3ec831ee8b4a0c522501222a69923e9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/text/qbytearraymatcher.h

@@ -105,7 +105,7 @@ protected:
     explicit constexpr QStaticByteArrayMatcherBase(const char *pattern, size_t n) noexcept
         : m_skiptable(generate(pattern, n)) {}
     // compiler-generated copy/more ctors/assignment operators are ok!
-    // compiler-generated dtor is ok!
+    ~QStaticByteArrayMatcherBase() = default;
 
 #if QT_REMOVED_SINCE(6, 3) && QT_POINTER_SIZE != 4
     Q_CORE_EXPORT int indexOfIn(const char *needle, uint nlen, const char *haystack, int hlen, int from) const noexcept;