hotfix: repair Clang ABI

modules/core/include/opencv2/core/types.hpp

@@ -162,7 +162,7 @@ public:
     //! default constructor
     Point_();
     Point_(_Tp _x, _Tp _y);
-#if (defined(__GNUC__) && __GNUC__ < 5)  // GCC 4.x bug. Details: https://github.com/opencv/opencv/pull/20837
+#if (defined(__GNUC__) && __GNUC__ < 5) && !defined(__clang__)  // GCC 4.x bug. Details: https://github.com/opencv/opencv/pull/20837
     Point_(const Point_& pt);
     Point_(Point_&& pt) CV_NOEXCEPT = default;
 #elif OPENCV_ABI_COMPATIBILITY < 500
@@ -172,7 +172,7 @@ public:
     Point_(const Size_<_Tp>& sz);
     Point_(const Vec<_Tp, 2>& v);
 
-#if (defined(__GNUC__) && __GNUC__ < 5)  // GCC 4.x bug. Details: https://github.com/opencv/opencv/pull/20837
+#if (defined(__GNUC__) && __GNUC__ < 5) && !defined(__clang__)  // GCC 4.x bug. Details: https://github.com/opencv/opencv/pull/20837
     Point_& operator = (const Point_& pt);
     Point_& operator = (Point_&& pt) CV_NOEXCEPT = default;
 #elif OPENCV_ABI_COMPATIBILITY < 500
@@ -1186,7 +1186,7 @@ template<typename _Tp> inline
 Point_<_Tp>::Point_(_Tp _x, _Tp _y)
     : x(_x), y(_y) {}
 
-#if (defined(__GNUC__) && __GNUC__ < 5)  // GCC 4.x bug. Details: https://github.com/opencv/opencv/pull/20837
+#if (defined(__GNUC__) && __GNUC__ < 5) && !defined(__clang__)  // GCC 4.x bug. Details: https://github.com/opencv/opencv/pull/20837
 template<typename _Tp> inline
 Point_<_Tp>::Point_(const Point_& pt)
     : x(pt.x), y(pt.y) {}
@@ -1200,7 +1200,7 @@ template<typename _Tp> inline
 Point_<_Tp>::Point_(const Vec<_Tp,2>& v)
     : x(v[0]), y(v[1]) {}
 
-#if (defined(__GNUC__) && __GNUC__ < 5)  // GCC 4.x bug. Details: https://github.com/opencv/opencv/pull/20837
+#if (defined(__GNUC__) && __GNUC__ < 5) && !defined(__clang__)  // GCC 4.x bug. Details: https://github.com/opencv/opencv/pull/20837
 template<typename _Tp> inline
 Point_<_Tp>& Point_<_Tp>::operator = (const Point_& pt)
 {