Packing the struct to work around llvm bug.

Change-Id: If94d6659df7e00b70c39619b05732046233cb196
diff --git a/java/ModelViewer/src/com/android/modelviewer/transform_def.rsh b/java/ModelViewer/src/com/android/modelviewer/transform_def.rsh
index 5c872a7..a99bac2 100644
--- a/java/ModelViewer/src/com/android/modelviewer/transform_def.rsh
+++ b/java/ModelViewer/src/com/android/modelviewer/transform_def.rsh
@@ -21,7 +21,7 @@
 #define TRANSFORM_ROTATE 2
 #define TRANSFORM_SCALE 3
 
-typedef struct {
+typedef struct __attribute__((packed, aligned(4))) {
     rs_matrix4x4 globalMat;
     rs_matrix4x4 localMat;