AdaptedScriptLanguage: handle null PluginInfo

This can happen with wrapped ScriptEngineFactories, since the
ScriptLanguageIndex wraps them using the appropriate
AdaptedScriptLanguage constructor. In that case, there is no associated
PluginInfo, and getLanguageName should simply delegate to the adapted
ScriptEngineFactory's language name.

Author: ctrueden

src/main/java/org/scijava/script/AdaptedScriptLanguage.java

@@ -37,6 +37,8 @@
 import javax.script.ScriptEngineFactory;
 import javax.script.ScriptEngineManager;
 
+import org.scijava.plugin.PluginInfo;
+
 /**
  * Abstract superclass for {@link ScriptLanguage} implementations which adapt an
  * existing {@link ScriptEngineFactory}.
@@ -100,7 +102,9 @@ public List<String> getNames() {
 
 	@Override
 	public String getLanguageName() {
-		final String name = getInfo().getName();
+		final PluginInfo<?> info = getInfo();
+		if (info == null) return null;
+		final String name = info.getName();
 		return name != null ? name : base.getLanguageName();
 	}