[Backport 7.x.x] Fixed some gcalloc in the debug window#464

JulienIgnace-Unity merged 2 commits into7.x.x/hd/stagingUnity-Technologies/Graphics:7.x.x/hd/stagingfrom

7.x.x/hd/debug-window-gcallocUnity-Technologies/Graphics:7.x.x/hd/debug-window-gcallocCopy head branch name to clipboard