[gnome-shell] Use pid_t for meta_window_get_pid()

[Florian Müllner <fmuellner src gnome org>]

commit b88ed3f251d2922f25c1184f03e346ba01612c64
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Wed Apr 8 16:23:11 2020 +0200

    Use pid_t for meta_window_get_pid()
    
    The return value of meta_window_get_pid() changed again and it now
    returns pid_t, which usually just resolves to int on most platforms. We
    should still use pid_t now though, so do that.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1188

 src/shell-app.c            | 2 +-
 src/shell-window-tracker.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/shell-app.c b/src/shell-app.c
index e0f5631c6e..f70bb7d3e7 100644
--- a/src/shell-app.c
+++ b/src/shell-app.c
@@ -1158,7 +1158,7 @@ shell_app_get_pids (ShellApp *app)
   for (iter = shell_app_get_windows (app); iter; iter = iter->next)
     {
       MetaWindow *window = iter->data;
-      int pid = meta_window_get_pid (window);
+      pid_t pid = meta_window_get_pid (window);
 
       if (pid < 1)
         continue;
diff --git a/src/shell-window-tracker.c b/src/shell-window-tracker.c
index 99ed8270c0..0474f00145 100644
--- a/src/shell-window-tracker.c
+++ b/src/shell-window-tracker.c
@@ -336,7 +336,7 @@ get_app_from_window_pid (ShellWindowTracker  *tracker,
                          MetaWindow          *window)
 {
   ShellApp *result;
-  int pid;
+  pid_t pid;
 
   if (meta_window_is_remote (window))
     return NULL;