ftp wildcard: segfault due to init only in multi_perform

The proper FTP wildcard init is now more properly done in Curl_pretransfer()
and the corresponding cleanup in Curl_close().

The previous place of init/cleanup code made the internal pointer to be NULL
when this feature was used with the multi_socket() API, as it was made within
the curl_multi_perform() function.

Reported-by: Jonathan Cardoso Machado
Fixes #800

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/transfer.c b/lib/transfer.c
index 5b22003dc..72f4bd9ef 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -1385,6 +1385,16 @@ CURLcode Curl_pretransfer(struct SessionHandle *data)
        consider to be fine */
     data->state.authhost.picked &= data->state.authhost.want;
     data->state.authproxy.picked &= data->state.authproxy.want;
+
+    if(data->set.wildcardmatch) {
+      struct WildcardData *wc = &data->wildcard;
+      if(!wc->filelist) {
+        result = Curl_wildcard_init(wc); /* init wildcard structures */
+        if(result)
+          return CURLM_OUT_OF_MEMORY;
+      }
+    }
+
   }
 
   return result;