Fix OptionsTest's assumption that bar was not persisted previously

Once the test ran successfully, bar is distinctively different from 0...

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

src/test/java/org/scijava/options/OptionsTest.java

@@ -94,6 +94,7 @@ public void testPersistence() {
 			final FooOptions fooOptions = optionsService.getOptions(FooOptions.class);
 
 			// bar should initially be 0
+			fooOptions.setBar(0);
 			assertEquals(0, fooOptions.getBar());
 
 			// verify that we can set bar to a desired value at all