multi_runsingle: fix memory leak

Coverity CID 1202837. There's a potential risk that 'newurl' gets
overwritten when it was already pointing to allocated memory.

diff --git a/lib/multi.c b/lib/multi.c
index a1dc2c82c97d67594fd55bbab5bd488db4715e42..7e7da682a9ce300572b3bce9676f1753c6f7626e 100644 (file)
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -1590,6 +1590,8 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
           if(!retry) {
             /* if the URL is a follow-location and not just a retried request
                then figure out the URL here */
+            if(newurl)
+              free(newurl);
             newurl = data->req.newurl;
             data->req.newurl = NULL;
             follow = FOLLOW_REDIR;