Suppress missing-field-initializers warnings in external/harfbuzz_ng

Bug: 27152680
Change-Id: I72dc31f3da0dba892df480416ec20cc25358ae53
diff --git a/Android.mk b/Android.mk
index 589c7fe..418b6c0 100644
--- a/Android.mk
+++ b/Android.mk
@@ -100,6 +100,7 @@
 	liblog
 LOCAL_C_INCLUDES += \
         $(LOCAL_PATH)/src
-LOCAL_CFLAGS += -DHB_NO_MT -DHAVE_OT -DHAVE_ICU -DHAVE_ICU_BUILTIN -Wno-unused-parameter
+LOCAL_CFLAGS += -DHB_NO_MT -DHAVE_OT -DHAVE_ICU -DHAVE_ICU_BUILTIN -Werror -Wno-unused-parameter \
+	-Wno-missing-field-initializers
 LOCAL_MODULE:= libharfbuzz_ng
 include $(BUILD_SHARED_LIBRARY)