fixed NPE in Box.extendToEncompass, close #1783
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@ -289,7 +289,7 @@ public class Box implements IBox {
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}
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public Box extendToEncompass (Box toBeContained) {
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if (!toBeContained.initialized) {
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if (toBeContained == null || !toBeContained.initialized) {
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return this;
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}
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