[Foundation] Add null check for Observer cback (#7)
* [Foundation] Add null check to Observer cback * [Foundation] Rename parameter name from cback to observer
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@ -786,11 +786,14 @@ namespace XamCore.Foundation {
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Action<NSObservedChange> cback;
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NSString key;
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public Observer (NSObject obj, NSString key, Action<NSObservedChange> cback)
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public Observer (NSObject obj, NSString key, Action<NSObservedChange> observer)
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{
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if (observer == null)
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throw new ArgumentNullException (nameof(observer));
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this.obj = new WeakReference (obj);
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this.key = key;
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this.cback = cback;
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this.cback = observer;
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IsDirectBinding = false;
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}
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