Lua 5.1 doesn't permit NULL msg argument to luaL_checkstack

1 files changed, 2 insertions, 2 deletions

diff --git a/src/openssl.c b/src/openssl.c
index 4eba534..f0c5684 100644
--- a/src/openssl.c
+++ b/src/openssl.c
@@ -3202,7 +3202,7 @@ static int pk_getParameters(lua_State *L) {
                  * Subsequent parameters will be assigned as fields.
                  */
                 lua_pushstring(L, "{");
-                luaL_checkstack(L, nopts, NULL);
+                luaL_checkstack(L, nopts, "too many arguments");
                 for (const char *const *optname = optlist; *optname; optname++) {
                         lua_pushstring(L, *optname);
                 }
@@ -3211,7 +3211,7 @@ static int pk_getParameters(lua_State *L) {
         otop = lua_gettop(L);
 
         /* provide space for results and working area */
-        luaL_checkstack(L, (otop - 1) + LUA_MINSTACK, NULL);
+        luaL_checkstack(L, (otop - 1) + LUA_MINSTACK, "too many arguments");
 
         /* no table index, yet */
         tindex = 0;