scripts: fix script interpreter used after register during load of script in python/perl/ruby/lua/guile plugins (bug #41345)

src/plugins/lua/weechat-lua-api.c

@@ -156,6 +156,7 @@ weechat_lua_api_register (lua_State *L)
                                              "version %s (%s)"),
                             LUA_PLUGIN_NAME, name, version, description);
         }
+        lua_current_script->interpreter = (lua_State *) lua_current_interpreter;
     }
     else
     {

src/plugins/lua/weechat-lua.c

@@ -445,8 +445,6 @@ weechat_lua_load (const char *filename)
     }
     lua_current_script = lua_registered_script;
 
-    lua_current_script->interpreter = (lua_State *) lua_current_interpreter;
-
     /*
      * set input/close callbacks for buffers created by this script
      * (to restore callbacks after upgrade)