Updated .c files from yaml-0.1.4. Just a couple of one-liners.

emitter.c

@@ -1154,7 +1154,7 @@ yaml_emitter_check_simple_key(yaml_emitter_t *emitter)
             break;
 
         case YAML_MAPPING_START_EVENT:
-            if (!yaml_emitter_check_empty_sequence(emitter))
+            if (!yaml_emitter_check_empty_mapping(emitter))
                 return 0;
             length += emitter->anchor_data.anchor_length
                 + emitter->tag_data.handle_length

scanner.c

@@ -1122,7 +1122,7 @@ yaml_parser_save_simple_key(yaml_parser_t *parser)
         simple_key.possible = 1;
         simple_key.required = required;
         simple_key.token_number = 
-            parser->tokens_parsed + parser->tokens.tail - parser->tokens.head;
+            parser->tokens_parsed + (parser->tokens.tail - parser->tokens.head);
         simple_key.mark = parser->mark;
 
         if (!yaml_parser_remove_simple_key(parser)) return 0;