Fix #9588. Add sys.executable to two shell=True tests.

Lib/test/test_subprocess.py

@@ -1113,11 +1113,12 @@ class CommandsWithSpaces (BaseTestCase):
 
     def test_shell_string_with_spaces(self):
         # call() function with string argument with spaces on Windows
-        self.with_spaces('"%s" "%s"' % (self.fname, "ab cd"), shell=1)
+        self.with_spaces('"%s" "%s" "%s"' % (sys.executable, self.fname,
+                                             "ab cd"), shell=1)
 
     def test_shell_sequence_with_spaces(self):
         # call() function with sequence argument with spaces on Windows
-        self.with_spaces([self.fname, "ab cd"], shell=1)
+        self.with_spaces([sys.executable, self.fname, "ab cd"], shell=1)
 
     def test_noshell_string_with_spaces(self):
         # call() function with string argument with spaces on Windows