Added a try / catch to limit issue with popping off an empty log list when reverting state snapshots

Author: joeykrug

ethereum/state.py

@@ -258,8 +258,11 @@ def revert(self, snapshot):
         h, L, auxvars = snapshot
         three_touched = self.cache[THREE].touched if THREE in self.cache else False # Compatibility with weird geth+parity bug
         while len(self.journal) > L:
-            lastitem = self.journal.pop()
-            lastitem()
+            try:
+                lastitem = self.journal.pop()
+                lastitem()
+            except Exception as e:
+                print(e)
         if h != self.trie.root_hash:
             assert L == 0
             self.trie.root_hash = h