fix get player when no fetch group

src/dev/peerat/backend/repository/DatabaseRepository.java

@@ -78,11 +78,13 @@ public class DatabaseRepository {
 				p.addCompletion(new Completion(0, 0));
 			}
 		}
+		if (hasColumn(playerResult, "name")) {
 			// Manage groups
 			String groupName = playerResult.getString("name");
 			if (groupName != null) {
 				p.addGroup(makeGroup(playerResult));
 			}
+		}
 
 		// ADD rank
 		PreparedStatement completionsStmt = DatabaseQuery.GET_PLAYER_RANK.prepare(con);