Revert "Restored 0.27.2 "toString()" behaviour of Exifdatum.value().toString() for CommentValue."

This reverts commit ecae9dc6eb.

src/exif.cpp

@@ -226,16 +226,8 @@ namespace Exiv2 {
         if ( ti ) {
             fct = ti->printFct_;
             if ( ti->typeId_ == comment ) {
-                fct=NULL;
-                const Exiv2::CommentValue* cv = dynamic_cast<const Exiv2::CommentValue*>(&value());
-                Exiv2::CommentValue::CharsetId csId = cv->charsetId();
-                if ( csId != CommentValue::undefined ) {
-                    os << "charset=" << CommentValue::CharsetInfo::name(csId) << " ";
-                }
-                os << cv->comment();
-#if 0
-                os << "|| value().toString() = " << value().toString();
-#endif
+              os << value().toString();
+              fct=NULL;
             }
         }
         if ( fct ) fct(os, value(), pMetadata);

src/value.cpp

@@ -548,6 +548,10 @@ namespace Exiv2 {
 
     std::ostream& CommentValue::write(std::ostream& os) const
     {
+        CharsetId csId = charsetId();
+        if (csId != undefined) {
+            os << "charset=" << CharsetInfo::name(csId) << " ";
+        }
         return os << comment();
     }