Fix crash in status bar ticker.

Bug: 2900850
Change-Id: Iaf71e093578501258a24cd43e5deaf624d28461e
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/Ticker.java b/packages/SystemUI/src/com/android/systemui/statusbar/Ticker.java
index 07e8653..3a697a6 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/Ticker.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/Ticker.java
@@ -185,11 +185,11 @@
         final Segment newSegment = new Segment(n, icon, n.notification.tickerText);
 
         // If there's already a notification schedule for this package and id, remove it.
-        for (int i=0; i<initialCount; i++) {
+        for (int i=0; i<mSegments.size(); i++) {
             Segment seg = mSegments.get(i);
             if (n.id == seg.notification.id && n.pkg.equals(seg.notification.pkg)) {
                 // just update that one to use this new data instead
-                mSegments.remove(i);
+                mSegments.remove(i--); // restart iteration here
             }
         }