Fix a 32-bit error from jenkins

src/test/test_dir_handle_get.c

@@ -251,7 +251,7 @@ test_dir_handle_get_bytes_txt(void *data)
   tt_assert(strstr(header, "Content-Encoding: identity\r\n"));
   tt_assert(strstr(header, "Pragma: no-cache\r\n"));
 
-  sprintf(buff, "Content-Length: %ld\r\n", body_len);
+  sprintf(buff, "Content-Length: %ld\r\n", (long) body_len);
   tt_assert(strstr(header, buff));
 
   tt_int_op(body_used, OP_EQ, strlen(body));
@@ -459,7 +459,7 @@ test_dir_handle_get_rendezvous2_on_encrypted_conn_success(void *data)
   tt_assert(strstr(header, "Content-Type: text/plain\r\n"));
   tt_assert(strstr(header, "Content-Encoding: identity\r\n"));
   tt_assert(strstr(header, "Pragma: no-cache\r\n"));
-  sprintf(buff, "Content-Length: %ld\r\n", body_len);
+  sprintf(buff, "Content-Length: %ld\r\n", (long) body_len);
   tt_assert(strstr(header, buff));
 
   tt_int_op(body_used, OP_EQ, strlen(body));