Refresh app and host state when returning from streaming via error

Limelight/ViewControllers/MainFrameViewController.m

@@ -656,10 +656,9 @@ static NSMutableSet* hostList;
     [[NSNotificationCenter defaultCenter] removeObserver:self];
 }
 
--(void)handleReturnToForeground
+-(void)beginForegroundRefresh
 {
-    _background = NO;
+    if (!_background) {
-    
         [_discMan startDiscovery];
         
         // This will refresh the applist when a paired host is selected
@@ -667,6 +666,14 @@ static NSMutableSet* hostList;
             [self hostClicked:_selectedHost view:nil];
         }
     }
+}
+
+-(void)handleReturnToForeground
+{
+    _background = NO;
+    
+    [self beginForegroundRefresh];
+}
 
 -(void)handleEnterBackground
 {
@@ -692,10 +699,14 @@ static NSMutableSet* hostList;
     // since the stream view segues to us just before
     // entering the background. We can't check the app
     // state here (since it's in transition), so we have
-    // to use this variable that we set.
+    // to use this function that will use our internal
-    if (!_background) {
+    // state here to determine whether we're foreground.
-        [_discMan startDiscovery];
+    //
-    }
+    // Note that this is neccessary here as we may enter
+    // this view via an error dialog from the stream
+    // view, so we won't get a return to active notification
+    // for that which would normally fire beginForegroundRefresh.
+    [self beginForegroundRefresh];
 }
 
 - (void)viewDidDisappear:(BOOL)animated