http: set bem.cas to 0 if scrying at latest #930
Merged
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Before #912
bem.caswas set to some garbage value if the scry occured at latest case, which was not equal tou3_none, allowing the scry request to go through. After #912 scrying at latest was essentially forbidden. This commit setsbem.casto 0 to pass the check. The actual value does not matter since it won't be used.