Fix NPE

Change-Id: If816a3cafa42f92ec32cd77ba3a3a902201d9ca4
diff --git a/src/com/android/launcher3/graphics/IconNormalizer.java b/src/com/android/launcher3/graphics/IconNormalizer.java
index 069895a..ce2bca6 100644
--- a/src/com/android/launcher3/graphics/IconNormalizer.java
+++ b/src/com/android/launcher3/graphics/IconNormalizer.java
@@ -220,7 +220,9 @@
             @Nullable Path path, @Nullable boolean[] outMaskShape) {
         if (Utilities.isAtLeastO() && d instanceof AdaptiveIconDrawable &&
                 mAdaptiveIconScale != SCALE_NOT_INITIALIZED) {
-            outBounds.set(mBounds);
+            if (outBounds != null) {
+                outBounds.set(mBounds);
+            }
             return mAdaptiveIconScale;
         }
         int width = d.getIntrinsicWidth();