Mark a non-exported function as static.

Change-Id: I2f497e8ec4dcfb878ce9491577e46d4c1ea09723
diff --git a/libs/rs/java/ModelViewer/src/com/android/modelviewer/transform.rs b/libs/rs/java/ModelViewer/src/com/android/modelviewer/transform.rs
index 3c235d7..f328025 100644
--- a/libs/rs/java/ModelViewer/src/com/android/modelviewer/transform.rs
+++ b/libs/rs/java/ModelViewer/src/com/android/modelviewer/transform.rs
@@ -25,7 +25,7 @@
     rs_matrix4x4 *mat;
 } ParentData;
 
-void appendTransformation(int type, float4 data, rs_matrix4x4 *mat) {
+static void appendTransformation(int type, float4 data, rs_matrix4x4 *mat) {
     rs_matrix4x4 temp;
 
     switch (type) {