Fix IllegalStateException when class is not found

We need to pass the cause to the constructor, since
ClassNotFoundException does not allow initCause to be called.

Author: ctrueden

src/main/java/org/scijava/command/CommandInfo.java

@@ -300,9 +300,7 @@ public Class<?> loadDelegateClass() throws ClassNotFoundException {
 			return loadClass();
 		}
 		catch (final InstantiableException exc) {
-			final ClassNotFoundException cnfe = new ClassNotFoundException();
-			cnfe.initCause(exc);
-			throw cnfe;
+			throw new ClassNotFoundException(null, exc);
 		}
 	}