Update HelloCompute to use separate output bitmap.

Change-Id: I236d35b1ce41099dcd18389983d694982f1c7f6c
diff --git a/samples/RenderScript/HelloCompute/src/com/example/android/rs/hellocompute/HelloCompute.java b/samples/RenderScript/HelloCompute/src/com/example/android/rs/hellocompute/HelloCompute.java
index 0d6c47b..1656821 100644
--- a/samples/RenderScript/HelloCompute/src/com/example/android/rs/hellocompute/HelloCompute.java
+++ b/samples/RenderScript/HelloCompute/src/com/example/android/rs/hellocompute/HelloCompute.java
@@ -58,7 +58,9 @@
         mInAllocation = Allocation.createFromBitmap(mRS, mBitmapIn,
                                                     Allocation.MipmapControl.MIPMAP_NONE,
                                                     Allocation.USAGE_SCRIPT);
-        mOutAllocation = Allocation.createTyped(mRS, mInAllocation.getType());
+        mOutAllocation = Allocation.createFromBitmap(mRS, mBitmapOut,
+                                                     Allocation.MipmapControl.MIPMAP_NONE,
+                                                     Allocation.USAGE_SCRIPT);
 
         mScript = new ScriptC_mono(mRS, getResources(), R.raw.mono);