fix ms over

@@ -103,6 +103,9 @@ class BSWorkbook(Workbook):
             sheet_header_info.setdefault(ws.title, {}).setdefault(consts.HEADER_KEY, first_row)
             for idx, header_value in enumerate(first_row):
                 header_col = self.get_header_col(header_value, classify)
+                if classify == consts.MS_CLASSIFY and header_col == consts.OVER_KEY and \
+                        header_value == '账户余额现转标志' and not first_row[idx - 1]:
+                    idx -= 1
                 if header_col is not None:
                     header_col_list.append((idx, header_col))