cisco/openh264 — pull request #555 by huili2 (2014-03-20 06:54:59+00:00)
Title: rephrase blockzero function complexity and remove useless functions

use memset to replace 3 blockzero operations for a continous memory.
Then remove useless blockzero functions.
review request see:
https://rbcommons.com/s/OpenH264/r/239/