Test case 251115

Description

CWE: 191 Integer Underflow
BadSource: getParameter_Servlet Read data from a querystring using getParameter()
GoodSource: A hardcoded non-zero, non-min, non-max, even number
Sinks: sub
GoodSink: Ensure there will not be an underflow before subtracting 1 from data
BadSink : Subtract 1 from data, which can cause an Underflow
Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package