[jsoncpp] Disable locale support

'localeconv' has been marked as being introduced in Android 21 here, but the deployment target is Android 16.0.0

Bug: 170642246
Change-Id: I96670acd17892d537dd4ff92968ac6dbbf2729a3
diff --git a/Android.bp b/Android.bp
index 86394cf..03e8ac1 100644
--- a/Android.bp
+++ b/Android.bp
@@ -47,6 +47,7 @@
 
     cflags: [
         "-DJSON_USE_EXCEPTION=0",
+        "-DJSONCPP_NO_LOCALE_SUPPORT",
         "-Wall",
         "-Werror",
         "-Wno-implicit-fallthrough",