tpm2_evictcontrol: fix bug in password handling
tpm2_evictcontrol: fix bug in password handling

Passing -P to tpm2_evictcontrol exits immediately because of mishandling the
return value of password_util_copy_password.

Fixes #249

Signed-off-by: William Roberts <60148e894dabf0b83bde1d460768794cd453c455@intel.com>

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