Eliminate remaining pgpValStr() uses in the codebase

These are just rpmpgp.c internal uses but this makes it clearer these
calls in pgpIdentItem() aren't doing anything special with the pgp value
tables, it's just the same dumb algorithm name lookups as the three other
usages in the codebase.

No functional changes.

rpmio/rpmpgp.c

@@ -56,8 +56,10 @@ char *pgpIdentItem(pgpDigParams digp)
         char *signid = rpmhex(pgpDigParamsSignID(digp) + 4, PGP_KEYID_LEN - 4);
 	rasprintf(&id, _("V%d %s/%s %s, key ID %s"),
                   pgpDigParamsVersion(digp),
-                  pgpValStr(pgpPubkeyTbl, pgpDigParamsAlgo(digp, PGPVAL_PUBKEYALGO)),
-                  pgpValStr(pgpHashTbl, pgpDigParamsAlgo(digp, PGPVAL_HASHALGO)),
+                  pgpValString(PGPVAL_PUBKEYALGO,
+				pgpDigParamsAlgo(digp, PGPVAL_PUBKEYALGO)),
+                  pgpValString(PGPVAL_HASHALGO,
+				pgpDigParamsAlgo(digp, PGPVAL_HASHALGO)),
                   (pgpSignatureType(digp) == -1) ? "Public Key" : "Signature",
                   signid);
         free(signid);