protect another portion against None name

lib/ansible/modules/packaging/language/pip.py

@@ -410,6 +410,7 @@ def main():
             out += out_pip
             err += err_pip
 
+            if pkg:
                 for pkg in name:
                     is_present = _is_present(pkg, version, out.split())
                     if (state == 'present' and not is_present) or (state == 'absent' and is_present):