[gdk-pixbuf] README.msvc: Fix sample Meson configure line

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

commit 081104da9301dc4c1d449a5f1c492ba5ba4f6d15
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Tue Aug 21 18:10:08 2018 +0800

    README.msvc: Fix sample Meson configure line
    
    One needs to pass in -Dx11=false as well, for all Visual Studio builds.

 README.msvc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README.msvc b/README.msvc
index a0da1a16a..b39551a57 100644
--- a/README.msvc
+++ b/README.msvc
@@ -34,7 +34,7 @@ part of the dependency's build process.
 Set the PATH, LIB, INCLUDE and PKG_CONFIG_PATH environmental variables as
 needed.  Run the following in a Visual Studio command prompt:
 
-python $(PATH_TO_meson.py)\meson.py $(GDK_PIXBUF_SRCDIR) --builldtype=$(BUILD_CONFIG) --prefix=$(PREFIX) 
-Dman=false $(OTHER_OPTIONS)
+python $(PATH_TO_meson.py)\meson.py $(GDK_PIXBUF_SRCDIR) --builldtype=$(BUILD_CONFIG) --prefix=$(PREFIX) 
-Dman=false -Dx11=false $(OTHER_OPTIONS)
 
 For $(OTHER_OPTIONS), the following may be of interest, besides the png,
 jpeg, japer and tiff options.  Prefix each option with -D: