Reserve enough space for RTSP CSD

make parameters to GetSizeWidth() reflect values being used in
corresponding EncodeSize() invocations so we won't overflow the buffer.

Bug: 123701862
Test: y
Change-Id: I78596176e6042c95582494a8ae1b9c3160bf5955
(cherry picked from commit c025be8ce5f1b34bdf293ac367685c969bd430ba)
1 file changed