[gimp/gimp-2-10] plug-ins: fix Windows distribution.

[Jehan Pagès <jehanp src gnome org>]

commit a2902790cc5d86d265cda53d83cfea657f9763c6
Author: Jehan <jehan girinstud io>
Date:   Sun May 20 23:19:44 2018 +0200

    plug-ins: fix Windows distribution.
    
    "magnification-api-win32.h" was not included in the dist!
    Note that I know that alphabetical order is wrong. I am planning to
    actually change the name of the file (more in line with other filenames)
    but I am waiting to finish a review of another patch from Gil before
    doing so. So just let it as-is for now! ;-)

 plug-ins/screenshot/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/plug-ins/screenshot/Makefile.am b/plug-ins/screenshot/Makefile.am
index debb488..ad6ab04 100644
--- a/plug-ins/screenshot/Makefile.am
+++ b/plug-ins/screenshot/Makefile.am
@@ -60,6 +60,7 @@ screenshot_SOURCES = \
        screenshot-win32.rc             \
        screenshot-win32.c              \
        screenshot-win32.h              \
+       magnification-api-win32.h       \
        screenshot-win32-resource.h
 
 EXTRA_DIST = \