Fix typo in last commit.

src/edns0.c

@@ -145,7 +145,7 @@ size_t add_pseudoheader(struct dns_header *header, size_t plen, unsigned char *l
 	  if (i + len > rdlen)
 	    {
 	      rdlen = 0;
-	      islast = 0;
+	      is_last = 0;
 	      break;
 	    }