tpm2_policyor: Silent failure bug fix for invalid/unspecified policy digest alg
tpm2_policyor: Silent failure bug fix for invalid/unspecified policy digest alg

Signed-off-by: Imran Desai <d01faadd01d89088a38277c634ffb396f2b368f8@intel.com>

01org/tpm2.0-tools,01org/tpm2.0-tools,01org/tpm2.0-tools