Fix missing ICU #include

Fix compile error in hb-icu.cc when ICU configured with
U_NO_DEFAULT_INCLUDE_UTF_HEADERS=1

diff --git a/src/hb-icu.cc b/src/hb-icu.cc
index 24cec9d..ee54721 100644 (file)
--- a/src/hb-icu.cc
+++ b/src/hb-icu.cc
@@ -36,6 +36,7 @@
 #include <unicode/uchar.h>
 #include <unicode/unorm.h>
 #include <unicode/ustring.h>
+#include <unicode/utf16.h>
 #include <unicode/uversion.h>