skia2/tests/sksl/errors/InterfaceBlockWithNoMembers.glsl

### Compilation failed:

error: 1: interface block 'S' must contain at least one member
error: 2: interface block 'testBlock' must contain at least one member
2 errors
Migrate CrbugOssfuzz21688 to a golden-output test. Change-Id: I2c077e723d123b01fbcc8fe841ee1f3d28dc152d Bug: skia:10694 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/332037 Reviewed-by: Ethan Nicholas <ethannicholas@google.com> Commit-Queue: John Stiles <johnstiles@google.com> 2020-11-04 19:52:50 +00:00			`### Compilation failed:`

Fix fuzzer-discovered null deref with empty interface blocks. Change-Id: I95bfa33f674bce0098cc6d4469c8c85ee8b051f5 Fixes: oss-fuzz:38875 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/449817 Reviewed-by: Ethan Nicholas <ethannicholas@google.com> Commit-Queue: Ethan Nicholas <ethannicholas@google.com> Auto-Submit: John Stiles <johnstiles@google.com> 2021-09-17 13:14:28 +00:00			`error: 1: interface block 'S' must contain at least one member`
			`error: 2: interface block 'testBlock' must contain at least one member`
			`2 errors`