[PATCH] http.c: Fix problem with repeated calls of http_init

Calling http_init after calling http_cleanup causes a segfault.  This
is due to the pragma_header curl_slist being freed but not being set
to NULL.  The subsequent call to http_init tries to setup the slist
again, but it now points to an invalid memory location.

Signed-off-by: Julian Phillips <redacted>
---

This doesn't cause any problems in current git as far as I know.  It does however break my C fetch when using http.

 http.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/http.c b/http.c
index 576740f..ae27e0c 100644
--- a/http.c
+++ b/http.c

@@ -300,6 +300,7 @@ void http_cleanup(void)
 	curl_global_cleanup();
 
 	curl_slist_free_all(pragma_header);
+        pragma_header = NULL;
 }
 
 struct active_request_slot *get_active_slot(void)

-- 
1.5.1.2