test runs but I do not check results yet.

Change-Id: I427581a301bb1a9710554187accad2d6f9d9b10c
diff --git a/libs/rs/Element.cpp b/libs/rs/Element.cpp
index d193892..f318d40 100644
--- a/libs/rs/Element.cpp
+++ b/libs/rs/Element.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "libRS_cpp"
+
 #include <utils/Log.h>
 #include <malloc.h>
 #include <string.h>