message: Make -checkmempool=1 not fail through int32 overflow
diff: @@ -401,7 +401,7 @@ public:
  * check does nothing.
  */
  void check(const CCoinsViewCache *pcoins) const;
  - void setSanityCheck(double dFrequency = 1.0) { nCheckFrequency = dFrequency * 4294967296.0; }
  + void setSanityCheck(double dFrequency = 1.0) { nCheckFrequency = dFrequency * 4294967295.0; }
  // addUnchecked must updated state for all ancestors of a given transaction,
  // to track size/count of descendant transactions. First version of
  