AppDelegate: Change `window` property to instance variable

Got this error:

    Cannot synthesize weak property because the current deployment
    target does not support weak references

Get rid of the property and replace it with an instance variable to get
rid of the error.

1 files changed, 3 insertions, 1 deletions

diff --git a/CopyMailto/AppDelegate.h b/CopyMailto/AppDelegate.h
index df7aec0..b46e3ff 100644
--- a/CopyMailto/AppDelegate.h
+++ b/CopyMailto/AppDelegate.h
@@ -8,7 +8,9 @@
 
 #import <Cocoa/Cocoa.h>
 
-@interface AppDelegate : NSObject <NSApplicationDelegate>
+@interface AppDelegate : NSObject <NSApplicationDelegate> {
+    IBOutlet NSWindow *_window;
+}
 
 - (void)handleURLEvent:(NSAppleEventDescriptor *)event
     withReplyEvent: (NSAppleEventDescriptor *)replyEvent;