Fix some spacing in frame_buffer.py
Fix some spacing in frame_buffer.py

vladmunteanu/hyper-h2,Kriechi/hyper-h2,python-hyper/hyper-h2,bhavishyagopesh/hyper-h2,Kriechi/hyper-h2,vladmunteanu/hyper-h2,python-hyper/hyper-h2