[glib] README.win32: Update workarounds for VS 2008 x64 builds

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

commit 6528887534bc42698eebabe33a2c4603aac3dc46
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Dec 5 18:09:02 2018 +0800

    README.win32: Update workarounds for VS 2008 x64 builds
    
    We need to also update build.ninja after configuration so that builds
    don't get stuck on gio/tests/gsubprocess-testprog.c.

 README.win32 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/README.win32 b/README.win32
index 62236d016..e6f8ef737 100644
--- a/README.win32
+++ b/README.win32
@@ -246,5 +246,5 @@ for /r %f in (*.exe.manifest) do if exist $(PREFIX)\bin\%~nf mt /manifest %f $(P
  remove all running instances of cl.exe, which will cause the build process to terminate.  Update
  the build flags of the sources that hang on compilation by changing its "/O2" flag to "/O1"
  in build.ninja, and  retry the build, where things should continue to build normally.  At the
- time of writing, this is needed for compiling glib/gtestutils.c,  gio/gsettings.c and
- gio/gsettingsschema.c
+ time of writing, this is needed for compiling glib/gtestutils.c,  gio/gsettings.c,
+ gio/gsettingsschema.c and gio/tests/gsubprocess-testprog.c