THRIFT-412. python: Fix some syntacticaly-incorrect code generation

r758558 introduced a but that caused some of the generated docstrings
to be indented incorrectly, resulting in syntactically invalid code.
This commit fixes the indentation.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@760118 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/compiler/cpp/src/generate/t_py_generator.cc b/compiler/cpp/src/generate/t_py_generator.cc
index 59a4705..69c1996 100644
--- a/compiler/cpp/src/generate/t_py_generator.cc
+++ b/compiler/cpp/src/generate/t_py_generator.cc
@@ -929,9 +929,11 @@
     for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
       f_service_ <<
         indent() << "def " << function_signature_if(*f_iter) << ":" << endl;
+      indent_up();
       generate_python_docstring(f_service_, (*f_iter));
       f_service_ <<
-        indent() << "  pass" << endl << endl;
+        indent() << "pass" << endl << endl;
+      indent_down();
     }
   }