Use rapidjson internal::SelectIf

Author: womsersap

include/rapidjson/reader.h

@@ -1464,24 +1464,9 @@ class GenericReader {
         RAPIDJSON_FORCEINLINE Ch Take() { return Base::TakePush(); }
     };
 
-    template <bool test>
-    struct NumberCharacterConditional {
-        typedef char type;
-    };
-
-    template<>
-    struct NumberCharacterConditional<true> {
-        typedef typename TargetEncoding::Ch type;
-    };
-
-    template<>
-    struct NumberCharacterConditional<false> {
-        typedef char type;
-    };
-
     template<unsigned parseFlags, typename InputStream, typename Handler>
     void ParseNumber(InputStream& is, Handler& handler) {
-        typedef NumberCharacterConditional<(parseFlags& kParseNumbersAsStringsFlag) != 0 >::type NumberCharacter;
+        typedef typename internal::SelectIf<internal::BoolType<(parseFlags & kParseNumbersAsStringsFlag) != 0>, typename TargetEncoding::Ch, char>::Type NumberCharacter;
 
         internal::StreamLocalCopy<InputStream> copy(is);
         NumberStream<InputStream, NumberCharacter,