Redundant digest verification in validateBlob
Redundant digest verification in validateBlob

Change-Id: I03764edadae529db2cc3acf7ecca329570f18659
Signed-off-by: Li Yi <9b065897ddf8076b8519f3c6d24b707446157dae@gmail.com>

thaJeztah/distribution,thaJeztah/distribution