[pod] Bugfix while dumping large size images into pod templates from appy.gen FileWrapper instances.

pod/doc_importers.py

@@ -68,16 +68,17 @@ class DocImporter:
             # We need to dump the file content (in self.content) in a temp file
             # first. self.content may be binary, a file handler or a
             # FileWrapper.
+            if isinstance(self.content, FileWrapper):
+                self.content.dump(self.importPath)
+            else:
                 if isinstance(self.content, file):
                     fileContent = self.content.read()
-            elif isinstance(self.content, FileWrapper):
-                fileContent = content.content
                 else:
                     fileContent = self.content
                 f = file(self.importPath, 'wb')
                 f.write(fileContent)
                 f.close()
-        # ImageImporter adds additional, image-specific attrs, through
+        # ImageImporter adds image-specific attrs, through
         # ImageImporter.setImageInfo.
 
     def getImportFolder(self):