He may have changed only a single line, but making the queue 4 months instead of 3 could break other parts of the system. Perhaps the "save data" and "backup" functions assume 3 as well, so you'd lose data. Perhaps other assumptions are made in the code, so with a 4 you'll end up with buffer overflows. Those test and security people are in the process to catch these issues before there are problems. It may seem a trivial change, but people make assumptions all the time.
