Revert "Fix the error and make the argument nonnull"

This reverts commit 8ee5768bf8d5683f5e1b9711fd9b2447629c0b41.

Reason for revert: this argument will be corrected as null_unspecified

Change-Id: Ia6ab97657737f77125e974c45d0a2d1a6342dadc
1 file changed