Some JDT versions throws exception for invalid syntax instead of returning null.

Author: fvgh

Diff for: _ext/eclipse-jdt/src/test/java/com/diffplug/spotless/extra/eclipse/java/EclipseJdtFormatterStepImplTest.java

@@ -55,8 +55,12 @@ public void defaultFormat() throws Throwable {
 
 	@Test
 	public void invalidFormat() throws Throwable {
-		String output = format(FORMATTED.replace("void hello() {", "void hello()  "), config -> {});
-		assertTrue("Incomplete Java not formatted on best effort basis.", output.contains("void hello()  " + LINE_DELIMITER));
+		try {
+			String output = format(FORMATTED.replace("void hello() {", "void hello()  "), config -> {});
+			assertTrue("Incomplete Java not formatted on best effort basis.", output.contains("void hello()  " + LINE_DELIMITER));
+		} catch (IndexOutOfBoundsException e) {
+			//Newer JDT versions throw exception
+		}
 	}
 
 	@Test