Add missing EventBus constructors to ConfigChangedEvent

Author: TheGlitch76

patchwork-fml/src/main/java/net/minecraftforge/fml/client/event/ConfigChangedEvent.java

@@ -40,6 +40,11 @@ public class ConfigChangedEvent extends Event {
 	@Nullable
 	private final String configID;
 
+	// For EventBus
+	public ConfigChangedEvent() {
+		this(null, null, false, false);
+	}
+
 	public ConfigChangedEvent(String modID, @Nullable String configID, boolean isWorldRunning, boolean requiresMcRestart) {
 		this.modID = modID;
 		this.configID = configID;
@@ -88,6 +93,10 @@ public String getConfigID() {
 	 * Modders should check the modID field of the event to ensure they are only acting on their own config screen's event!
 	 */
 	public static class OnConfigChangedEvent extends ConfigChangedEvent {
+		// For EventBus
+		public OnConfigChangedEvent() {
+		}
+
 		public OnConfigChangedEvent(String modID, @Nullable String configID, boolean isWorldRunning, boolean requiresMcRestart) {
 			super(modID, configID, isWorldRunning, requiresMcRestart);
 		}
@@ -98,6 +107,10 @@ public OnConfigChangedEvent(String modID, @Nullable String configID, boolean isW
 	 * This event only fires if the OnConfigChangedEvent result is not DENY.
 	 */
 	public static class PostConfigChangedEvent extends ConfigChangedEvent {
+		// For EventBus
+		public PostConfigChangedEvent() {
+		}
+
 		public PostConfigChangedEvent(String modID, @Nullable String configID, boolean isWorldRunning, boolean requiresMcRestart) {
 			super(modID, configID, isWorldRunning, requiresMcRestart);
 		}