Fix bug #5233207 android.graphics.cts.PaintTest#testBreakText fails on IRK56F trygon-userdebug

- Paint.breakText() API was regressing on the argument validation: a count < 0 is a valid one

Change-Id: I6d09294ee9f21901ba00017ce0d73f757fc7b147

graphics/java/android/graphics/Paint.java

@@ -1349,7 +1349,7 @@ public class Paint {
         if (text == null) {
             throw new IllegalArgumentException("text cannot be null");
         }
-        if ((index | count) < 0 || index + count > text.length) {
+        if (index < 0 || text.length - index < Math.abs(count)) {
             throw new ArrayIndexOutOfBoundsException();
         }