srtp: Improve the minimum encryption buffer size check

This clarifies where the limit number comes from, and only
requires exactly as much padding space as will be needed.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-01-18 12:33:02 +02:00
parent e1d0b3d875
commit a2a991b2dd