[twitter] prevent exception in '_extract_components()' (#7139)

gallery_dl/extractor/twitter.py

@@ -237,7 +237,7 @@ class TwitterExtractor(Extractor):
     def _extract_components(self, tweet, data, files):
         for component_id in data["components"]:
             com = data["component_objects"][component_id]
-            for conv in com["data"]["conversation_preview"]:
+            for conv in com["data"].get("conversation_preview") or ():
                 for url in conv.get("mediaUrls") or ():
                     files.append({"url": url})
 

gallery_dl/version.py

@@ -6,5 +6,5 @@
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
 
-__version__ = "1.29.1"
+__version__ = "1.29.2-dev"
 __variant__ = None