pkcs12.c better formatting for unsupported params

since when we get to this point, other information was already
printed, we should insert some whitespace between already
printed data and this "unsupported parameters" error message
Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1334)

apps/pkcs12.c

@@ -782,7 +782,7 @@ static int alg_print(const X509_ALGOR *alg)
         if (aparamtype == V_ASN1_SEQUENCE)
             pbe2 = ASN1_item_unpack(aparam, ASN1_ITEM_rptr(PBE2PARAM));
         if (pbe2 == NULL) {
-            BIO_puts(bio_err, "<unsupported parameters>");
+            BIO_puts(bio_err, ", <unsupported parameters>");
             goto done;
         }
         X509_ALGOR_get0(&aoid, &aparamtype, &aparam, pbe2->keyfunc);
@@ -798,7 +798,7 @@ static int alg_print(const X509_ALGOR *alg)
             if (aparamtype == V_ASN1_SEQUENCE)
                 kdf = ASN1_item_unpack(aparam, ASN1_ITEM_rptr(PBKDF2PARAM));
             if (kdf == NULL) {
-                BIO_puts(bio_err, "<unsupported parameters>");
+                BIO_puts(bio_err, ", <unsupported parameters>");
                 goto done;
             }
 
@@ -817,7 +817,7 @@ static int alg_print(const X509_ALGOR *alg)
         if (aparamtype == V_ASN1_SEQUENCE)
             pbe = ASN1_item_unpack(aparam, ASN1_ITEM_rptr(PBEPARAM));
         if (pbe == NULL) {
-            BIO_puts(bio_err, "<unsupported parameters>");
+            BIO_puts(bio_err, ", <unsupported parameters>");
             goto done;
         }
         BIO_printf(bio_err, ", Iteration %ld", ASN1_INTEGER_get(pbe->iter));