FAPI: Fix execution of policy callback for reading PCR registers.

For Policy PCR current PCR registers of the TPM registers can be used to compute
the policy digest. The counter in the computed PCR list was not set. Thus a empty
PCR list was used for the policy digest computation.

Signed-off-by: Juergen Repp <[email protected]>

Author: JuergenReppSIT

src/tss2-fapi/ifapi_policy_callbacks.c

@@ -373,6 +373,7 @@ ifapi_read_pcr(
 
         /* Initialize digest list with pcr values from TPM */
         i_pcr = 0;
+        (*pcr_values)->count = pcr_digests->count;
         for (i = 0; i < out_selection->count; i++) {
             for (pcr = 0; pcr < TPM2_MAX_PCRS; pcr++) {
                 uint8_t byte_idx = pcr / 8;