android: simplify boolean statement

Change-Id: I92cdccfe7b97d9baf29b1155990a38b26579e365

android/source/src/java/org/mozilla/gecko/gfx/RectUtils.java

@@ -89,10 +89,9 @@ public final class RectUtils {
     public static boolean fuzzyEquals(RectF a, RectF b) {
         if (a == null && b == null)
             return true;
-        else if ((a == null && b != null) || (a != null && b == null))
-            return false;
         else
-            return FloatUtils.fuzzyEquals(a.top, b.top)
+            return a != null && b != null
+                && FloatUtils.fuzzyEquals(a.top, b.top)
                 && FloatUtils.fuzzyEquals(a.left, b.left)
                 && FloatUtils.fuzzyEquals(a.right, b.right)
                 && FloatUtils.fuzzyEquals(a.bottom, b.bottom);