Fix cancel flag check

The check inside the verifier for the presence of flag_canceled is
incorrect. Fix it in this CL.

Bug: 211379801
Test: TEST=libinput_rust_test; m $TEST && $ANDROID_HOST_OUT/nativetest64/$TEST/$TEST
Change-Id: I6880922b21cc9cb629a98e0c8071f1c4d5130aa5
1 file changed