Add error checks to the copyFrom functions.

Change-Id: Iac064c52eb58b05a94fa1c432304c6216256555b
diff --git a/graphics/java/android/renderscript/ProgramVertexFixedFunction.java b/graphics/java/android/renderscript/ProgramVertexFixedFunction.java
index 666c7ec..556964a 100644
--- a/graphics/java/android/renderscript/ProgramVertexFixedFunction.java
+++ b/graphics/java/android/renderscript/ProgramVertexFixedFunction.java
@@ -229,7 +229,7 @@
             for(int i = 0; i < 16; i ++) {
                 mIOBuffer.addF32(m.mMat[i]);
             }
-            mAlloc.copyFrom(mIOBuffer.getData());
+            mAlloc.setFromFieldPacker(0, mIOBuffer);
         }
 
         /**