Fix ossz-buzz reported bug 13185: make the code to be more readable.
Fix ossz-buzz reported bug 13185: make the code to be more readable.

GuangweiWang/openh264,cisco/openh264,GuangweiWang/openh264,GuangweiWang/openh264,shihuade/openh264,shihuade/openh264,ruil2/openh264,shihuade/openh264,ruil2/openh264,GuangweiWang/openh264,ruil2/openh264,cisco/openh264,mstorsjo/openh264,ruil2/openh264,cisco/openh264,cisco/openh264,mstorsjo/openh264,cisco/openh264,shihuade/openh264,GuangweiWang/openh264,mstorsjo/openh264,cisco/openh264,mstorsjo/openh264,GuangweiWang/openh264,ruil2/openh264,ruil2/openh264,cisco/openh264,mstorsjo/openh264,shihuade/openh264,shihuade/openh264,mstorsjo/openh264,GuangweiWang/openh264,shihuade/openh264,mstorsjo/openh264,ruil2/openh264