add a define

Change-Id: I8139d0639d07afd200ba4507768bf76d0054687b
diff --git a/native/jni/src/defines.h b/native/jni/src/defines.h
index 7069011..96abfe8 100644
--- a/native/jni/src/defines.h
+++ b/native/jni/src/defines.h
@@ -352,6 +352,9 @@
 
 #define MAX_SPACES_INTERNAL 16
 
+// TODO: Change this to MAX_WORDS, remove MAX_WORDS in Java, and stop getting it from Java
+#define MAX_WORDS_INTERNAL 18
+
 // Max Distance between point to key
 #define MAX_POINT_TO_KEY_LENGTH 10000000