[geary/mjog/985-client-api-buld-failure] build: Fix build failure due to missing client API

[Michael Gratton <mjog src gnome org>]

commit b5abd3f9664c396ad57f177750973695c58e8b7f
Author: Michael Gratton <mike vee net>
Date:   Mon Sep 28 08:53:35 2020 +1000

    build: Fix build failure due to missing client API
    
    Don't use client lib vala ags when building the web process extension,
    since that will cause it to also write a VAPI with the same name as
    the client lib, causing the build to fail if the web process side wins
    that race.
    
    Fixes #985

 src/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/meson.build b/src/meson.build
index 87760e741..225777e8b 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -72,7 +72,7 @@ web_process = library('geary-web-process',
     webkit2gtk_web_extension,
   ],
   include_directories: config_h_dir,
-  vala_args: client_vala_args,
+  vala_args: geary_vala_args,
   c_args: geary_c_args,
   install: true,
   install_dir: web_extensions_dir