Alexandre Julliard : kernelbase: Fix buffer size passed to read_nt_symlink().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 00bd0518cab0f7808d6bef5d1cc27f0fddd82d98
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=00bd0518cab0f7808d6bef5d1cc27f0fddd82d98

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Wed Apr 21 20:54:00 2021 +0200

kernelbase: Fix buffer size passed to read_nt_symlink().

Spotted by David Torok.

Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/kernelbase/volume.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/kernelbase/volume.c b/dlls/kernelbase/volume.c
index 594c1b8e138..d513dda1f9d 100644
--- a/dlls/kernelbase/volume.c
+++ b/dlls/kernelbase/volume.c
@@ -308,7 +308,7 @@ BOOL WINAPI GetVolumeNameForVolumeMountPointW( LPCWSTR path, LPWSTR volume, DWOR
     /* Take the mount point and get the "nonpersistent name" */
     /* We will then take that and get the volume name        */
     nonpersist_name = (WCHAR *)(input + 1);
-    status = read_nt_symlink( symlink_name, nonpersist_name, i_size - sizeof(*input) );
+    status = read_nt_symlink( symlink_name, nonpersist_name, (i_size - sizeof(*input)) / sizeof(WCHAR) );
     TRACE("read_nt_symlink got stat=%x, for %s, got <%s>\n", status,
             debugstr_w(symlink_name), debugstr_w(nonpersist_name));
     if (status != STATUS_SUCCESS)