Fix ICC build

"error: constexpr constructor must initialize direct base class"

Task-number: QTCREATORBUG-20598
Change-Id: Iab2e379b7ed3b0cb7f9b7c654613ec6cd3d91967
Reviewed-by: Ivan Donchevskii <ivan.donchevskii@qt.io>
Reviewed-by: Alexander Shevchenko <sav_ix@ukr.net>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/libs/utils/sizedarray.h

@@ -54,7 +54,7 @@ public:
     using std::array<T, MaxSize>::rend;
     using std::array<T, MaxSize>::crend;
 
-    constexpr SizedArray() = default;
+    constexpr SizedArray() : std::array<T, MaxSize>() {}
     SizedArray(std::initializer_list<T> list)
         : m_size(std::uint8_t(list.size()))
     {