Crash when sorting devices for html generation

[edenman]

java.lang.NullPointerException
at com.squareup.spoon.html.HtmlIndex$Device.compareTo(HtmlIndex.java:97)
at com.squareup.spoon.html.HtmlIndex$Device.compareTo(HtmlIndex.java:72)
at java.util.Arrays.mergeSort(Arrays.java:1144)
at java.util.Arrays.sort(Arrays.java:1079)
at java.util.Collections.sort(Collections.java:115)
at com.squareup.spoon.html.HtmlIndex.from(HtmlIndex.java:36)
at com.squareup.spoon.html.HtmlRenderer.generateIndexHtml(HtmlRenderer.java:94)
at com.squareup.spoon.html.HtmlRenderer.render(HtmlRenderer.java:54)
at com.squareup.spoon.SpoonRunner.run(SpoonRunner.java:80)
at com.squareup.spoon.SpoonMojo.execute(SpoonMojo.java:148)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
... 20 more