swaygrab: Fix memory leak when recording videos
swaygrab: Fix memory leak when recording videos

taiyu-len/sway,4e554c4c/sway,ascent12/sway,SirCmpwn/sway,taiyu-len/sway,colemickens/sway,ascent12/sway,mikkeloscar/sway,ascent12/sway,crondog/sway,colemickens/sway,johalun/sway,taiyu-len/sway,1ace/sway,colemickens/sway,sleep-walker/sway,1ace/sway,sleep-walker/sway,ptMuta/sway,mikkeloscar/sway,4e554c4c/sway,crondog/sway,1ace/sway