Use -Werror in external/dng_sdk am: 1ab71199fe
am: 9fb2201fe0

Change-Id: I16e23b364fb7a4f01def190725a6e1df3630981b
diff --git a/Android.bp b/Android.bp
index 65c7c51..6120477 100644
--- a/Android.bp
+++ b/Android.bp
@@ -75,6 +75,7 @@
         "-DqDNGUseXMP=0",
         "-DqDNGValidateTarget=1",
         "-DqAndroid=1",
+        "-Werror",
         "-Wsign-compare",
         "-Wno-reorder",
         "-Wframe-larger-than=20000",