ros-visualization/rqt_common_plugins — pull request #279 by trainman419 (2014-09-22 08:27:25+00:00)
Title: Fix topic type retrieval for multiple bag files

Fix a bug where get_datatype would return None if the last bag didn't contain the topic in question.

This was causing bag plugins for specific datatypes to fail to enumerate properly in the `View (By Topic)` context menu.