http.c: don't use curl_easy_strerror prior to curl-7.12.0

Reverts be22d92 (http: avoid empty error messages for some curl
errors, 2011-09-05) on platforms with older versions of libcURL
where the function is not available.

Signed-off-by: Joachim Schmitz <jojo@schmitz-digital.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/http.c b/http.c
index b61ac85d4b..18bc6bf7bf 100644
--- a/http.c
+++ b/http.c
@@ -806,10 +806,12 @@ static int http_request(const char *url, void *result, int target, int options)
 				ret = HTTP_REAUTH;
 			}
 		} else {
+#if LIBCURL_VERSION_NUM >= 0x070c00
 			if (!curl_errorstr[0])
 				strlcpy(curl_errorstr,
 					curl_easy_strerror(results.curl_result),
 					sizeof(curl_errorstr));
+#endif
 			ret = HTTP_ERROR;
 		}
 	} else {