blaze822: blaze822_chdr: downcase header

blaze822.c

@@ -436,7 +436,11 @@ char *
 blaze822_chdr(struct message *mesg, const char *chdr)
 {
 	char hdr[256];
+	char *c;
+
 	size_t l = snprintf(hdr, sizeof hdr, "%c%s:", 0, chdr);
+	for (c = hdr+1; *c; c++)
+		*c = lc(*c);
 
 	return blaze822_hdr_(mesg, hdr, l);
 }

mshow.c

@@ -683,7 +683,7 @@ show(char *file)
 				*n = 0;
 			v = blaze822_chdr(msg, h);
 			if (v) {
-				if (strcmp("date", h) == 0)
+				if (strcasecmp("date", h) == 0)
 					print_date_header(v);
 				else
 					print_decode_header(h, v);