[gnome-shell] ibusManager: fix ibus launch error because of wrong method name

[Carlos Garnacho <carlosg src gnome org>]

commit 94f6976ddd6337593203fdcdd2e3644774408dfa
Author: Alynx Zhou <alynx zhou gmail com>
Date:   Mon Mar 9 10:09:47 2020 +0800

    ibusManager: fix ibus launch error because of wrong method name
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1080

 js/misc/ibusManager.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/js/misc/ibusManager.js b/js/misc/ibusManager.js
index aa1f510602..e27e9f06dd 100644
--- a/js/misc/ibusManager.js
+++ b/js/misc/ibusManager.js
@@ -66,7 +66,7 @@ var IBusManager = class {
             let display = GLib.getenv('GNOME_SETUP_DISPLAY');
             if (display)
                 launcher.setenv('DISPLAY', display, true);
-            launcher.launch(cmdLine);
+            launcher.spawnv(cmdLine);
         } catch (e) {
             log(`Failed to launch ibus-daemon: ${e.message}`);
         }