Possible Memory Leak?

I just had the game client crash at the end of a match. I submitted the bugsplat report and it came back as a known issue stating I ran out of memory. The only applications I was running was chrome and League of Legends. My machine was just rescently started from being off all night. I have 16 gigs of ram and a fresh install of windows 8.1. I only show 21% memory used after the crash. I don't know what it was before hand but I can tell you this, if I ran out of memory, its because your client has a memory leak. That or your system miss diagnosed the problem.