tpmclient: Fix an off-by-one bug.
tpmclient: Fix an off-by-one bug.

This is the same bug fixed in 541cff7b3dcd09b5cc1cbbc4109d2328f75e1a02.
This is why copying / pasting code is never a good idea.

Signed-off-by: Philip Tricca <fd418754d31777cf39b16b99b0350486ab840079@intel.com>

01org/tpm2-tss,01org/TPM2.0-TSS,tpm2-software/tpm2-tss,01org/tpm2-tss,01org/TPM2.0-TSS,01org/TPM2.0-TSS,01org/TPM2.0-TSS,tpm2-software/tpm2-tss,01org/tpm2-tss,tpm2-software/tpm2-tss