Development: Code Review
A Code Reviewer is somebody who looks on the source code, checks it for correctness and thinks about optimizations.
Nobody is perfect, we are human too. Even today then and when a bug shows up we did not recognized before. The only way to make the linux-dvb code as stable and robust as possible is that as many developers as possible analyze the source and watch out for potential bugs and weaknesses.
If you have a nice idea how to make things better then please start a thread on the linux-dvb Mailing List and let's discuss it.