Fixed crash when copying cards with has_styling

src/data/card.cpp

@@ -67,6 +67,8 @@ IMPLEMENT_REFLECTION(Card) {
 		} else if (stylesheet_for_reading()) {
 			REFLECT_IF_READING styling_data.init(stylesheet_for_reading()->styling_fields);
 			REFLECT(styling_data);
+		} else if (tag.reading()) {
+			has_styling = false; // We don't know the style, this can be because of copy/pasting
 		}
 	}
 	REFLECT(notes);

src/data/format/clipboard.cpp

@@ -11,6 +11,7 @@
 #include <data/card.hpp>
 #include <data/set.hpp>
 #include <data/game.hpp>
+#include <data/stylesheet.hpp>
 #include <data/keyword.hpp>
 #include <util/io/package.hpp>
 #include <script/scriptable.hpp>
@@ -59,7 +60,15 @@ wxDataFormat CardDataObject::format = _("application/x-mse-card");
 
 CardDataObject::CardDataObject(const SetP& set, const CardP& card) {
 	WrappedCard data = { set->game.get(), set->game->name(), card };
+	bool has_styling = card->has_styling && !card->stylesheet;
+	if (has_styling) {
+		// set the stylsheet, so when deserializing we know whos style options we are reading
+		card->stylesheet = set->stylesheet;
+	}
 	SetText(serialize_for_clipboard(*set, data));
+	if (has_styling) {
+		card->stylesheet = StyleSheetP(); // restore card
+	}
 	SetFormat(format);
 }