Resolve all compiler warnings

cockatrice/src/abstractclient.cpp

@@ -82,6 +82,7 @@ void AbstractClient::processProtocolItem(const ServerMessage &item)
 				case SessionEvent::USER_LEFT: emit userLeftEventReceived(event.GetExtension(Event_UserLeft::ext)); break;
 				case SessionEvent::GAME_JOINED: emit gameJoinedEventReceived(event.GetExtension(Event_GameJoined::ext)); break;
 				case SessionEvent::REPLAY_ADDED: emit replayAddedEventReceived(event.GetExtension(Event_ReplayAdded::ext)); break;
+                default: break;
 			}
 			break;
 		}

cockatrice/src/cardzone.cpp

@@ -143,6 +143,7 @@ QString CardZone::getTranslatedName(bool hisOwn, GrammaticalCase gc) const
 					? tr("his sideboard", "nominative, male owner")
 					: tr("%1's sideboard", "nominative, male owner").arg(ownerName)
 				);
+        default: break;
 		}
 	return QString();
 }

cockatrice/src/player.cpp

@@ -1514,8 +1514,8 @@ void Player::playCard(CardItem *c, bool faceDown, bool tapped)
 	
 	CardInfo *ci = c->getInfo();
 	if ((!settingsCache->getPlayToStack() && ci->getTableRow() == 3) ||
-	    (settingsCache->getPlayToStack() && ci->getTableRow() != 0) &&
-	    c->getZone()->getName().toStdString() != "stack") {
+	    ((settingsCache->getPlayToStack() && ci->getTableRow() != 0) &&
+	    c->getZone()->getName().toStdString() != "stack")) {
 		cmd.set_target_zone("stack");
 		cmd.set_x(0);
 		cmd.set_y(0);
@@ -1784,6 +1784,7 @@ void Player::cardMenuAction()
 					commandList.append(cmd);
 					break;
 				}
+                default: break;
 			}
 		}
 	else {