gsl-shell.git - gsl-shell

diff --git a/agg-plot/lua-plot.cpp b/agg-plot/lua-plot.cpp
index 3322662f..68d71559 100644
--- a/agg-plot/lua-plot.cpp
+++ b/agg-plot/lua-plot.cpp

@@ -463,6 +463,7 @@ agg_plot_show (lua_State *L)

pthread_attr_destroy (attr);

mlua_window_unref(L, p->id);

p->id = -1;

+ AGG_UNLOCK();

return luaL_error(L, "error creating thread.");

}