access_http: use the user agent provided by the user: fix #4162

(cherry picked from commit 911b23af)
Signed-off-by: Rémi Duraffort <ivoire@videolan.org>

modules/access/http.c

@@ -1288,7 +1288,7 @@ static int Request( access_t *p_access, uint64_t i_tell )
     }
     /* User Agent */
     net_Printf( p_access, p_sys->fd, pvs,
-                "User-Agent: %s LibVLC/"VERSION"\r\n",
+                "User-Agent: %s\r\n",
                 p_sys->psz_user_agent );
     /* Offset */
     if( p_sys->i_version == 1 && ! p_sys->b_continuous )