ratectrl_rtc.h: quiet MSVC int64_t->int conv warning

target_bandwidth is int64_t, but layer_target_bitrate[0] is an int. this
is safe in the only place it's set because target_bandwidth defaults to
1000. target_bandwidth is later used to populate the cpi's target, which
is an unsigned int so there may be further fixes/cleanups that can be

Change-Id: I35dbaa2e55a0fca22e0e2680dcac9ea4c6b2815a
1 file changed