Add 'server' to scope_to_string's list of possible suspects, as to avoid an error when LogLevel is trace

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1377457 13f79535-47bb-0310-9956-ffa450edef68

modules/lua/mod_lua.c

@@ -102,6 +102,8 @@ static const char *scope_to_string(unsigned int scope)
 #if APR_HAS_THREADS
     case AP_LUA_SCOPE_THREAD:
         return "thread";
+    case AP_LUA_SCOPE_SERVER:
+        return "server";
 #endif
     default:
         ap_assert(0);