MiscUtils: use more succinct code for equal method

One thousand thanks to Johannes Schindelin for the inspiration!!

Author: ctrueden

src/main/java/org/scijava/util/MiscUtils.java

@@ -91,9 +91,7 @@ public static <T extends Comparable<? super T>> int compare(final T o1,
 	 *         {@code o1.equals(o2)} holds.
 	 */
 	public static boolean equal(final Object o1, final Object o2) {
-		if (o1 == null && o2 == null) return true;
-		if (o1 == null || o2 == null) return false;
-		return o1.equals(o2);
+		return o1 == null ? o2 == null : o1.equals(o2);
 	}
 
 }