Tiny comment to improve code comprehensibility.

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PR:

crypto/x509/x509_vfy.c

@@ -449,7 +449,7 @@ ASN1_UTCTIME *ctm;
 	X509_gmtime_adj(&atm,-offset);
 
 	i=(buff1[0]-'0')*10+(buff1[1]-'0');
-	if (i < 50) i+=100;
+	if (i < 50) i+=100; /* cf. RFC 2459 */
 	j=(buff2[0]-'0')*10+(buff2[1]-'0');
 	if (j < 50) j+=100;
 

ssl/s23_srvr.c

@@ -213,7 +213,7 @@ SSL *s;
 		if (!ssl3_setup_buffers(s)) goto err;
 
 		n=ssl23_read_bytes(s,7);
-		if (n != 7) return(n);
+		if (n != 7) return(n); /* n == -1 || n == 0 */
 
 		p=s->packet;