message: core: add "namespace cv" in CV_StaticAssert fallback implementation
diff: @@ -118,9 +118,11 @@ namespace cv { namespace debug_build_guard { } using namespace debug_build_guard
  # if !defined(__clang__) && defined(__GNUC__) && (__GNUC__*100 + __GNUC_MINOR__ > 302)
  # define CV_StaticAssert(condition, reason) ({ extern int __attribute__((error("CV_StaticAssert: " reason " " #condition))) CV_StaticAssert(); ((condition) ? 0 : CV_StaticAssert()); })
  # else
  +namespace cv {
  template <bool x> struct CV_StaticAssert_failed;
  template <> struct CV_StaticAssert_failed<true> { enum { val = 1 }; };
  template<int x> struct CV_StaticAssert_test {};
  +}
  # define CV_StaticAssert(condition, reason)\
  typedef cv::CV_StaticAssert_test< sizeof(cv::CV_StaticAssert_failed< static_cast<bool>(condition) >) > CVAUX_CONCAT(CV_StaticAssert_failed_at_, __LINE__)
  # endif
  