Fix off-by-one error on WARC-Type parsing

warc-dump-responses.c

@@ -89,7 +89,7 @@ checkstate:
 					return 1;
 				}
 				DEBUG_PRINTF("Found WARC-Type header at %p (offset %zu)\n", (void*)(m0 + 2), m0 + 2 - bufp);
-				m1 = memmem(m0, n - (m0 - bufp), "\r\n", 2);
+				m1 = memmem(m0 + 1, n - (m0 + 1 - bufp), "\r\n", 2);
 				if (!m1) {
 					fprintf(stderr, "Error: CRLF after WARC-Type missing\n");
 					return 1;