run_external_diff: use an argv_array for the environment

diff --git a/http.h b/http.h
index 12ca5c892d61a063c856bcdef9154a103c0aa4bc..a766066dfde652d13bbd30f1bb83928b1e727f22 100644 (file)
--- a/http.h
+++ b/http.h
@@ -13,8 +13,7 @@
 /*
  * We detect based on the cURL version if multi-transfer is
  * usable in this implementation and define this symbol accordingly.
- * This is not something Makefile should set nor users should pass
- * via CFLAGS.
+ * This shouldn't be set by the Makefile or by the user (e.g. via CFLAGS).
  */
 #undef USE_CURL_MULTI
 
@@ -54,6 +53,7 @@
 struct slot_results {
        CURLcode curl_result;
        long http_code;
+       long auth_avail;
 };
 
 struct active_request_slot {