Fix conformance

Author: grynspan

Sources/Overlays/_Testing_WinSDK/Attachments/UnsafeMutablePointer+AttachableAsIWICBitmapSource.swift

@@ -13,7 +13,7 @@ private import Testing
 public import WinSDK
 
 @_spi(Experimental)
-extension UnsafeMutablePointer: AttachableAsIWICBitmapSource where Pointee: _AttachableByAddressAsIWICBitmapSource {
+extension UnsafeMutablePointer: _AttachableAsImage, AttachableAsIWICBitmapSource where Pointee: _AttachableByAddressAsIWICBitmapSource {
   public func copyAttachableIWICBitmapSource() throws -> UnsafeMutablePointer<IWICBitmapSource> {
     let factory = try IWICImagingFactory.create()
     defer {