[PATCH 1/2] chardev: Improve error report by calling error_setg_win32()

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Use error_setg_win32() which adds a hint similar to strerror(errno)).

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 chardev/char-pipe.c | 2 +-
 chardev/char-win.c  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/chardev/char-pipe.c b/chardev/char-pipe.c
index 94d714ffcd..fd12c9e63b 100644
--- a/chardev/char-pipe.c
+++ b/chardev/char-pipe.c
@@ -70,7 +70,7 @@ static int win_chr_pipe_init(Chardev *chr, const char *filename,
                               MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
     g_free(openname);
     if (s->file == INVALID_HANDLE_VALUE) {
-        error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
+        error_setg_win32(errp, GetLastError(), "Failed CreateNamedPipe");
         s->file = NULL;
         goto fail;
     }
diff --git a/chardev/char-win.c b/chardev/char-win.c
index 34825f683d..d4fb44c4dc 100644
--- a/chardev/char-win.c
+++ b/chardev/char-win.c
@@ -96,7 +96,7 @@ int win_chr_serial_init(Chardev *chr, const char *filename, Error **errp)
     s->file = CreateFile(filename, GENERIC_READ | GENERIC_WRITE, 0, NULL,
                       OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
     if (s->file == INVALID_HANDLE_VALUE) {
-        error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
+        error_setg_win32(errp, GetLastError(), "Failed CreateFile");
         s->file = NULL;
         goto fail;
     }
-- 
2.21.1