[validation] Check null buf before printing validation info

Change-Id: I2ba7c4c694ad4a75a6e68722e3fd7cde05a47a0f
1 file changed
tree: 977708385e062e4133ddbcddea32e3ec6b0ca343
  1. host/
  2. shared/
  3. system/
  4. tests/
  5. Android.mk
  6. common.mk
  7. README