Bug #1588217: don't parse "= " as a soft line break in binascii's
a2b_qp() function, instead leave it in the string as quopri.decode()
does.
diff --git a/Lib/test/test_binascii.py b/Lib/test/test_binascii.py
index 8df4504..8272ad9 100755
--- a/Lib/test/test_binascii.py
+++ b/Lib/test/test_binascii.py
@@ -134,7 +134,7 @@
             pass
         else:
             self.fail("binascii.a2b_qp(**{1:1}) didn't raise TypeError")
-        self.assertEqual(binascii.a2b_qp("= "), "")
+        self.assertEqual(binascii.a2b_qp("= "), "= ")
         self.assertEqual(binascii.a2b_qp("=="), "=")
         self.assertEqual(binascii.a2b_qp("=AX"), "=AX")
         self.assertRaises(TypeError, binascii.b2a_qp, foo="bar")