[libadwaita/msvc: 73/79] examples/meson.build: Fix linking on Visual Studio-like compilers

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

commit 8b48ed9e7076de6c8b93efd8403a6dd55ee9b049
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Mon Jul 26 18:56:55 2021 +0800

    examples/meson.build: Fix linking on Visual Studio-like compilers
    
    We must pass in /entry:mainCRTStartup so that we can build the demo program
    with 'gui_app: true'.

 demo/meson.build | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/demo/meson.build b/demo/meson.build
index 6af941fe..1159ccc2 100644
--- a/demo/meson.build
+++ b/demo/meson.build
@@ -36,6 +36,12 @@ adwaita_demo_sources = [
   libadwaita_generated_headers,
 ]
 
+linker_args = []
+
+if cc.get_argument_syntax() == 'msvc'
+  linker_args += '/entry:mainCRTStartup'
+endif
+
 adwaita_demo = executable('adwaita-@0@-demo'.format(apiversion),
   adwaita_demo_sources,
   dependencies: libadwaita_dep,