std: use static cast in strig view creation

alib2std/src/extensions/container/string.hpp

@@ -440,7 +440,7 @@ inline std::string_view trim ( std::string_view s ) {
 // Creates a string view from a pair of iterators
 //  http://stackoverflow.com/q/33750600/882436
 inline std::string_view make_string_view ( std::string::const_iterator begin, std::string::const_iterator end ) {
-	return std::string_view { ( begin != end ) ? & * begin : nullptr, ( typename std::string_view::size_type ) std::max ( std::distance ( begin, end ), ( typename std::string_view::difference_type ) 0 ) };
+	return std::string_view { ( begin != end ) ? & * begin : nullptr, static_cast < std::string_view::size_type > ( std::max ( std::distance ( begin, end ), static_cast < typename std::string_view::difference_type > ( 0 ) ) ) };
 } // make_string_view
 } /* namespace ext */