Close opened file in LinguaMakoExtractor

Author: encukou

mako/ext/linguaplugin.py

@@ -27,7 +27,15 @@ def __call__(self, filename, options, fileobj=None):
         self.python_extractor = get_extractor("x.py")
         if fileobj is None:
             fileobj = open(filename, "rb")
-        return self.process_file(fileobj)
+            must_close = True
+        else:
+            must_close = False
+        try:
+            for message in self.process_file(fileobj):
+                yield message
+        finally:
+            if must_close:
+                fileobj.close()
 
     def process_python(self, code, code_lineno, translator_strings):
         source = code.getvalue().strip()