fix #1056: message "Return value: ..." generated by refcounting not localized

sphinx/ext/refcounting.py

@@ -17,6 +17,7 @@ from os import path
 from docutils import nodes
 
 from sphinx import addnodes
+from sphinx.locale import _
 
 
 # refcount annotation
@@ -78,12 +79,14 @@ class Refcounts(dict):
                 continue
             elif entry.result_type not in ("PyObject*", "PyVarObject*"):
                 continue
-            rc = 'Return value: '
+            rc = _('Return value: ')
             if entry.result_refs is None:
-                rc += "Always NULL."
+                rc += _("Always NULL.")
             else:
-                rc += (entry.result_refs and "New" or "Borrowed") + \
-                      " reference."
+                if entry.result_refs:
+                    rc += _("New reference.")
+                else:
+                    rc += _("Borrowed reference.")
             node.insert(0, refcount(rc, rc))