Fix glReadPixels and glClear memory leaks.

Bug 26486408

Change-Id: Iec34ee0034695950163e8e40082d1ad7128490f8
Reviewed-on: https://swiftshader-review.googlesource.com/4533
Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <capn@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
3 files changed