Swift cleanup: prefer case list over fallthrough in switch statements

Signed-off-by: Bryan Montz <bryanmontz@me.com>
Signed-off-by: William Casarin <jb55@jb55.com>

damus/ContentView.swift

@@ -490,10 +490,7 @@ struct ContentView: View {
                 selected_timeline = .dms
                 damus_state.dms.set_active_dm(target.pubkey)
                 navigationCoordinator.push(route: Route.DMChat(dms: damus_state.dms.active_model))
-            case .like: fallthrough
-            case .zap: fallthrough
-            case .mention: fallthrough
-            case .repost:
+            case .like, .zap, .mention, .repost:
                 open_event(ev: target)
             case .profile_zap:
                 // Handled separately above.

damus/Models/HomeModel.swift

@@ -165,9 +165,7 @@ class HomeModel {
         }
 
         switch kind {
-        case .chat: fallthrough
-        case .longform: fallthrough
-        case .text:
+        case .chat, .longform, .text:
             handle_text_event(sub_id: sub_id, ev)
         case .contacts:
             handle_contact_event(sub_id: sub_id, relay_id: relay_id, ev: ev)
@@ -862,8 +860,7 @@ func guard_valid_event(events: EventCache, ev: NostrEvent, callback: @escaping (
     case .ok:
         callback()
         
-    case .bad_id: fallthrough
-    case .bad_sig:
+    case .bad_id, .bad_sig:
         break
     }
 }

damus/Views/Notifications/EventGroupView.swift

@@ -182,8 +182,7 @@ func reacting_to_verb(group: EventGroupType) -> String {
         return "reacted"
     case .repost:
         return "reposted"
-    case .zap: fallthrough
-    case .profile_zap:
+    case .zap, .profile_zap:
         return "zapped"
     }
 }