Fixes GCC complaining about a non error

src/String/StringView.hpp

@@ -22,7 +22,10 @@ namespace ArbUt {
     public:
         __ConstStringCharHolder(const char* non_null value, size_t length) : _value(new char[length + 1]) {
             EnsureNotNull(value);
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstringop-truncation"
             strncpy(_value, value, length);
+#pragma GCC diagnostic pop
             _value[length] = 0;
         }
         ~__ConstStringCharHolder() noexcept { delete[] _value; }