headers: Import fontsub.h from wine

Required for google/skia project

Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
Signed-off-by: LIU Hao <lh_mouse@126.com>

mingw-w64-headers/wine-import.sh

diff --git a/mingw-w64-headers/wine-import.sh b/mingw-w64-headers/wine-import.sh
index a98b4f3..4a4b1aa 100755
--- a/mingw-w64-headers/wine-import.sh
+++ b/mingw-w64-headers/wine-import.sh
@@ -109,6 +109,7 @@
 	errors.h \
 	evcode.h \
 	exdispid.h \
+	fontsub.h \
 	mediaerr.h \
 	mscat.h \
 	propkeydef.h \