additional tweal to #1528 to make formatters skip nulls
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@ -2206,7 +2206,9 @@ the specific language governing permissions and limitations under the Apache Lic
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this.selection.data("select2-data", data);
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container.empty();
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formatted=this.opts.formatSelection(data, container, this.opts.escapeMarkup);
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if (data !== null) {
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formatted=this.opts.formatSelection(data, container, this.opts.escapeMarkup);
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}
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if (formatted !== undefined) {
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container.append(formatted);
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}
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