tree 35a83adc09742e308d8091b327209f8c86681205
parent 8e4c17c0d0e5ce11ecba3e2c8d0107f4218a0afa
author Chih-Hung Hsieh <chh@google.com> 1505325764 -0700
committer Chih-Hung Hsieh <chh@google.com> 1505325764 -0700

Check null before use of schema().

Change-Id: Id0133b503cebd4be03f23275c9d2c2440e91f29a