proxy: print lua error on reload failure

When failing to run mcp_config_routes on a worker thread,
we were eating the lua error message.

This is now consistent with the rest of the code.

1 files changed, 1 insertions, 1 deletions

diff --git a/proxy_config.c b/proxy_config.c
index cca6b87..98af5c2 100644
--- a/proxy_config.c
+++ b/proxy_config.c
@@ -400,7 +400,7 @@ int proxy_thread_loadconf(proxy_ctx_t *ctx, LIBEVENT_THREAD *thr) {
     int res = lua_pcall(L, 0, LUA_MULTRET, 0);
     if (res != LUA_OK) {
         // FIXME (v2): don't exit here!
-        fprintf(stderr, "Failed to load data into worker thread\n");
+        fprintf(stderr, "Failed to load data into worker thread: %s\n", lua_tostring(L, -1));
         return -1;
     }