Better handle tags when no role is set

src/libs/metadata/impl/TagLibParser.cpp

@@ -140,6 +140,7 @@ getPerformerArtists(const TagLib::PropertyMap& properties,
 	PerformerContainer performers;
 
 	// picard stores like this: (see https://picard-docs.musicbrainz.org/en/appendices/tag_mapping.html#performer)
+	// We may hit both styles for the same track
 	// PERFORMER: artist (role)
 	if (const std::vector<std::string> artistNames {getPropertyValuesFirstMatchAs<std::string>(properties, artistTagNames)}; !artistNames.empty())
 	{
@@ -151,11 +152,9 @@ getPerformerArtists(const TagLib::PropertyMap& properties,
 		}
 	}
 	// PERFORMER:role (MP3)
-	else
-	{
 	for (const auto& [key, values] : properties)
 	{
-			if (key.startsWith("PERFORMER"))
+		if (key.startsWith("PERFORMER:"))
 		{
 			std::string performerStr {key.to8Bit(true)};
 			std::string role;
@@ -169,7 +168,6 @@ getPerformerArtists(const TagLib::PropertyMap& properties,
 				performers[role].push_back(Artist {value.to8Bit(true)});
 		}
 	}
-	}
 
 	return performers;
 }