Guard aginast O for checking AdaptiveIconDrawable
b/37952598

Change-Id: Ief11aa61d804f9ca44ce9199002a6e763b3bf3e9
diff --git a/src/com/android/launcher3/graphics/LauncherIcons.java b/src/com/android/launcher3/graphics/LauncherIcons.java
index 746a639..53521f2 100644
--- a/src/com/android/launcher3/graphics/LauncherIcons.java
+++ b/src/com/android/launcher3/graphics/LauncherIcons.java
@@ -265,7 +265,7 @@
             final int top = (textureHeight-height) / 2;
 
             sOldBounds.set(icon.getBounds());
-            if (icon instanceof AdaptiveIconDrawable) {
+            if (Utilities.isAtLeastO() && icon instanceof AdaptiveIconDrawable) {
                 int offset = Math.min(left, top);
                 int size = Math.max(width, height);
                 icon.setBounds(offset, offset, offset + size, offset + size);