C9GACS-1079 add PR reference number

Author: Jorge Fernandez Hernandez

astroquery/gaia/core.py

@@ -345,7 +345,7 @@ def __get_data_files(output_file, path):
                 tables = []
                 with fits.open(value, memmap=False) as hduList:
                     for hdu in hduList:
-                        if isinstance(hdu, TableHDU) or isinstance(hdu, BinTableHDU):
+                        if isinstance(hdu, (TableHDU, BinTableHDU)):
                             table = Table.read(hdu, format='fits')
                             Gaia.correct_table_units(table)
                             tables.append(table)