[v4l4j Driver] Resolved bug which failed the initialisation of all video devices if a single video file could not be opened correctly. #938
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…deo devices if a single video file could not be opened correctly.
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getWebcams()and all related forms of the method would fail on the v4l4j driver in the case that there was a single video file under /dev that was not a functional video camera - this pull request attempts to resolve that problem whilst maintaining a suitable level of error reporting.