[iPhone 4] Fixed viewport saving when app goes to background

iphone/Maps/Classes/MapViewController.hpp

@@ -42,5 +42,6 @@ withConfidenceRadius: (double) confidenceRadius
 
 // called when app is terminated by system
 - (void) OnTerminate;
+- (void) OnEnterBackground;
 
 @end

iphone/Maps/Classes/MapViewController.mm

@@ -299,6 +299,11 @@ NSInteger compareAddress(UITouch * l, UITouch * r, void * context)
 }
 
 - (void) OnTerminate
+{
+	[self OnEnterBackground];
+}
+
+- (void) OnEnterBackground
 {
 	if (m_framework)
   {	// save world rect for next launch
@@ -306,4 +311,5 @@ NSInteger compareAddress(UITouch * l, UITouch * r, void * context)
   }
 }
 
+
 @end

iphone/Maps/Classes/MapsAppDelegate.mm

@@ -12,6 +12,11 @@
 	[mapViewController OnTerminate];
 }
 
+- (void) applicationDidEnterBackground: (UIApplication *) application
+{
+	[mapViewController OnEnterBackground];
+}
+
 - (void) applicationDidFinishLaunching: (UIApplication *) application
 {
   // Add the tab bar controller's current view as a subview of the window