fixed an indentation error

debian/patches/Check-Internet-access-before-some-tests.patch

@@ -40,12 +40,12 @@ Index: python-xmlschema/tests/test_xpath.py
          self.assertIs(parser.schema, schema_proxy2)
  
      def test_get_context_method(self):
-+            # Internet access is not granted while a debian package is built
-+            # So we skip this test
-+            import subprocess
-+            cmd = "wget --spider --quiet http://example.com"
-+            if not subprocess.call(cmd, shell=True) == 0:
-+                return
++        # Internet access is not granted while a debian package is built
++        # So we skip this test
++        import subprocess
++        cmd = "wget --spider --quiet http://example.com"
++        if not subprocess.call(cmd, shell=True) == 0:
++            return
 +
          schema_proxy = XMLSchemaProxy(self.xs1)
          context = schema_proxy.get_context()