Enable signed-integer-overflow in wifi-display

BUG: 23752600
Change-Id: Ib222e8733cf57ea0e1e1e4f40651fce169b63c79
diff --git a/media/libstagefright/wifi-display/Android.mk b/media/libstagefright/wifi-display/Android.mk
index f70454a..6ebc4c7 100644
--- a/media/libstagefright/wifi-display/Android.mk
+++ b/media/libstagefright/wifi-display/Android.mk
@@ -30,6 +30,9 @@
         libui                           \
         libutils                        \
 
+LOCAL_CLANG := true
+LOCAL_SANITIZE := signed-integer-overflow
+
 LOCAL_MODULE:= libstagefright_wfd
 
 LOCAL_MODULE_TAGS:= optional