Resize the defaultConfigs vector to its actual size to avoid using nullptr elements to get attributes. BUG=angleproject:4195 Change-Id: I3cbad9ee8c2c9faeaa30f72a04cf2c071f79db19 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1949985 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>
