fix some SCC cycle mistakes #49654
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fix some SCC cycle mistakes #49654
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vtjnash
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backport 1.9
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KristofferC
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(cherry picked from commit 9bb0731)
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kpamnany
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(cherry picked from commit 9bb0731)
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I noticed cycle was not initialized, which would cause it to disregard methods that only linked back to the current image via a cycle or fail to verify those correctly. And would consider the wrong list of methods when determining if an ambiguity was already covered (making the compiler sometimes do a bit of extra work, or be very slightly too ambitious in very rare hypothetical cases).