Fix crash caused by missing eat node

README.txt

@@ -2,7 +2,7 @@ Mod/Modpack Creatures
 =====================
 Copyright (c) 2015 BlockMen <blockmen2015@gmail.com>
 
-Version: 2.2
+Version: 2.2.1
 
 
 A Mod(pack) for Minetest that provides a MOB-Engine and adds several creatures to the game.

changelog.txt

@@ -14,3 +14,6 @@ Version 2.2
 - Added descriptions to spawners
 - Added option to set custom panic and swim animations
 
+Version 2.2.1
+-------------
+- Fixed crash caused by not existing node

creatures/README.txt

@@ -2,7 +2,7 @@ Creatures MOB-Engine
 ====================
 Copyright (c) 2015 BlockMen <blockmen2015@gmail.com>
 
-Version: 2.0 Beta
+Version: 2.0.1
 
 
 This mod provides an engine, that handles the base function for MOB in Minetest.
@@ -12,7 +12,7 @@ performance and functionality.
 See API.txt for more informations on how to use this engine for mobs.
 
 
-License: 
+License:
 ~~~~~~~~
 Code:
 (c) Copyright 2015 BlockMen; modified zlib-License

creatures/functions.lua

@@ -481,7 +481,7 @@ creatures.on_step = function(self, dtime)
       if name == self.last_node.name then
         eat_node = current_pos
         break
-      elseif name == sn.name then
+      elseif sn and sn.name == name then
         eat_node = p
         break
       end