Method setStackNull

ij/src/main/java/ij/ImagePlus.java:1014–1021

()

	}

	private synchronized void setStackNull() {
		if (oneSliceStack && stack!=null && stack.size()>0) {
			String label = stack.getSliceLabel(1);
			setProp("Slice_Label", label);
		}
		stack = null;
		oneSliceStack = false;
	}

	/**	Saves this image's FileInfo so it can be later
		retieved using getOriginalFileInfo(). */