Bug fix : NPE when the first SurfaceLine of a Surface is null in...

Bug fix : NPE when the first SurfaceLine of a Surface is null in rebuildPixelsArray() method in ReferenceSurfaceExtraction.
Addition of GetWidth and getHeight methods
1 job for dev-bug-fix in 3 minutes and 45 seconds (queued for 22 seconds)
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passed maven #92955

00:03:45