[grilo-plugins] lua-factory: avoid leak of GrlNetWc on failure

[Victor Toso de Carvalho <victortoso src gnome org>]

commit b53c9027a65b864a213d67b4ddad321643928713
Author: Victor Toso <me victortoso com>
Date:   Sat May 21 08:51:37 2016 +0200

    lua-factory: avoid leak of GrlNetWc on failure
    
    https://bugzilla.gnome.org/show_bug.cgi?id=764078

 src/lua-factory/grl-lua-library.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/lua-factory/grl-lua-library.c b/src/lua-factory/grl-lua-library.c
index b101653..c70be08 100644
--- a/src/lua-factory/grl-lua-library.c
+++ b/src/lua-factory/grl-lua-library.c
@@ -1470,7 +1470,6 @@ grl_l_unzip (lua_State *L)
   }
   GRL_DEBUG ("grl.unzip() -> '%s'", url);
 
-  wc = net_wc_new_with_options (L, 3);
   os = grl_lua_operations_get_current_op (L);
   if (os == NULL) {
     luaL_error (L, "grl.unzip() failed: Can't retrieve current operation. "
@@ -1478,6 +1477,7 @@ grl_l_unzip (lua_State *L)
                    "is still active");
     return 0;
   }
+  wc = net_wc_new_with_options (L, 3);
 
   uo = g_new0 (UnzipOperation, 1);
   uo->L = L;