[gtk/gtk-3-24] build/win32: Dist forgotten file

[Chun-wei Fan <fanchunwei src gnome org>]

commit 44e8dcdf28a68475a856a681085c377280a81544
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Thu Jul 25 23:38:56 2019 +0800

    build/win32: Dist forgotten file
    
    We need to dist gen-gdkversionmacros-h.py...

 build/win32/Makefile.am | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/build/win32/Makefile.am b/build/win32/Makefile.am
index 6a1a6c31d4..b94f61216f 100644
--- a/build/win32/Makefile.am
+++ b/build/win32/Makefile.am
@@ -39,6 +39,7 @@ EXTRA_DIST += \
        config-msvc.mak         \
        config-msvc.mak.in              \
        detectenv-msvc.mak              \
+       gen-gdkversionmacros-h.py       \
        generate-msvc.mak       \
        gtk-introspection-msvc.mak      \
        introspection-msvc.mak          \