Fix compile warning on mac.

src/core/mac_delegate.h

@@ -0,0 +1,22 @@
+#import <AppKit/NSApplication.h>
+
+#include "config.h"
+
+class PlatformInterface;
+
+#ifdef SNOW_LEOPARD
+@interface AppDelegate :NSObject <NSApplicationDelegate> {
+#else
+@interface AppDelegate :NSObject {
+#endif
+  PlatformInterface* application_handler_;
+  NSMenu* dock_menu_;
+}
+
+- (id) initWithHandler: (PlatformInterface*)handler;
+// NSApplicationDelegate
+- (BOOL) applicationShouldHandleReopen: (NSApplication*)app hasVisibleWindows:(BOOL)flag;
+- (NSMenu*) applicationDockMenu: (NSApplication*)sender;
+- (void) setDockMenu: (NSMenu*)menu;
+@end
+

src/core/mac_startup.mm

@@ -34,6 +34,7 @@
 
 #include "config.h"
 #include "globalshortcuts.h"
+#include "mac_delegate.h"
 #include "mac_startup.h"
 #include "macglobalshortcutbackend.h"
 #include "utilities.h"
@@ -66,22 +67,6 @@
 - (void) mediaKeyEvent: (int)key state: (BOOL)state repeat: (BOOL)repeat;
 @end
 
-#ifdef SNOW_LEOPARD
-@interface AppDelegate :NSObject <NSApplicationDelegate> {
-#else
-@interface AppDelegate :NSObject {
-#endif
-  PlatformInterface* application_handler_;
-  NSMenu* dock_menu_;
-}
-
-- (id) initWithHandler: (PlatformInterface*)handler;
-// NSApplicationDelegate
-- (BOOL) applicationShouldHandleReopen: (NSApplication*)app hasVisibleWindows:(BOOL)flag;
-- (NSMenu*) applicationDockMenu: (NSApplication*)sender;
-- (void) setDockMenu: (NSMenu*)menu;
-@end
-
 @implementation AppDelegate
 
 - (id) init {

src/ui/macsystemtrayicon.mm

@@ -17,6 +17,7 @@
 
 #include "macsystemtrayicon.h"
 
+#include "core/mac_delegate.h"
 #include "core/song.h"
 
 #include <QAction>
@@ -83,7 +84,7 @@ class MacSystemTrayIconPrivate : boost::noncopyable {
 
     // Don't look now.
     // This must be called after our custom NSApplicationDelegate has been set.
-    [[NSApp delegate] setDockMenu:dock_menu_];
+    [(AppDelegate*)([NSApp delegate]) setDockMenu:dock_menu_];
 
     ClearNowPlaying();
   }