Use default tensor constructor.

combo/data/token_indexers/token_characters_indexer.py

@@ -56,7 +56,8 @@ class TokenCharactersIndexer(token_characters_indexer.TokenCharactersIndexer):
             padded_tokens.pop()
         # Truncates all the tokens to the desired length, and return the result.
         return {
-            "token_characters": torch.LongTensor(
-                [list(token[:desired_token_length]) for token in padded_tokens]
+            "token_characters": torch.tensor(
+                [list(token[:desired_token_length]) for token in padded_tokens],
+                dtype=torch.long
             )
         }