Fixed a blackscreening issue.

[PreyK]

For some reason Released render textures doesn't get deallocated correctly causing a memory problem where no more rendertextures can be allocated and your screen goes black/starts flashing. Demonstration: https://clips.twitch.tv/ThankfulPowerfulDaikonLeeroyJenkins Reproducing: build a project with ssrt and let it run overnight/a loong time This commit is the fix i made for my game (no more blackscreening, tested and in prod).