Fix - tableView cellForRowAtIndexPath:

return a fake cell to prevent app from crashing.

Riot/Model/Contact/ContactsDataSource.m

@@ -640,8 +640,6 @@
         }
         return tableViewCell;
     }
-    
-    return nil;
 }
 
 - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath

Riot/ViewController/PeopleViewController.m

@@ -223,7 +223,8 @@
         }
     }
     
-    return nil;
+    // Return a fake cell to prevent app from crashing.
+    return [[UITableViewCell alloc] init];
 }
 
 - (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath

Riot/ViewController/RoomParticipantsViewController.m

@@ -1123,6 +1123,11 @@
         
         cell = participantCell;
     }
+    else
+    {
+        // Return a fake cell to prevent app from crashing.
+        cell = [[UITableViewCell alloc] init];
+    }
     
     return cell;
 }

Riot/ViewController/StartChatViewController.m

@@ -353,6 +353,11 @@
         
         cell = participantCell;
     }
+    else
+    {
+        // Return a fake cell to prevent app from crashing.
+        cell = [[UITableViewCell alloc] init];
+    }
     
     return cell;
 }

Riot/ViewController/UsersDevicesViewController.m

@@ -169,6 +169,11 @@
 
         cell = deviceCell;
     }
+    else
+    {
+        // Return a fake cell to prevent app from crashing.
+        cell = [[UITableViewCell alloc] init];
+    }
 
     return cell;
 }