reject out-of-range quantifier counts in RegexParser#64
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the {min,max} loop in parseFactor accumulates the count in an int but only checks for a negative wrap afterwards, so a value like a{4294967296} slips past as a{0} (matching the empty string) and a{99999999999} exhausts the heap when matched; guard against the overflow before the multiply so an out-of-range count throws the parser.quantifier.5 it was always meant to.