Public rooms search: Made sure the room is no more selected when leaving the rooom page

Vector/ViewController/HomeViewController.m

@@ -192,8 +192,7 @@
     [super viewDidAppear:animated];
 
     // Release the current selected room (if any) except if the Room ViewController is still visible (see splitViewController.isCollapsed condition)
-    // Note: 'isCollapsed' property is available in UISplitViewController for iOS 8 and later.
-    if (!self.splitViewController || ([self.splitViewController respondsToSelector:@selector(isCollapsed)] && self.splitViewController.isCollapsed))
+    if (!self.splitViewController || self.splitViewController.isCollapsed)
     {
         // Release the current selected room (if any).
         [self closeSelectedRoom];
@@ -210,9 +209,8 @@
 {
     [super viewWillDisappear:animated];
 
-    // TODO: Check why it was done before
-    //_selectedRoomId = nil;
-    //_selectedRoomSession = nil;
+    _selectedRoomId = nil;
+    _selectedRoomSession = nil;
 }
 
 - (void) viewDidLayoutSubviews