[camera_avfoundation] ignore non object arguments in videoMock

Author: misos1

packages/camera/camera_avfoundation/example/ios/RunnerTests/FLTCamSampleBufferTests.m

@@ -67,6 +67,7 @@ - (void)testFirstAppendedSampleShouldBeVideo {
                                                 sourcePixelBufferAttributes:OCMOCK_ANY])
       .andReturn(videoMock);
   OCMStub([videoMock appendPixelBuffer:[OCMArg anyPointer] withPresentationTime:kCMTimeZero])
+      .ignoringNonObjectArgs()
       .andDo(^(NSInvocation *invocation) {
         writtenSamples = [writtenSamples stringByAppendingString:@"v"];
       });