cmd: Avoid hardcoding the Unicode string literal lengths.

[Francois Gouget]

---
 programs/cmd/directory.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/programs/cmd/directory.c b/programs/cmd/directory.c
index d58351e..8b556f7 100644
--- a/programs/cmd/directory.c
+++ b/programs/cmd/directory.c
@@ -562,7 +562,7 @@ static DIRECTORY_STACK *WCMD_list_directory (DIRECTORY_STACK *inputparms, int le
 static void WCMD_dir_trailer(WCHAR drive) {
     ULARGE_INTEGER avail, total, freebytes;
     DWORD status;
-    WCHAR driveName[4] = {'c',':','\\','\0'};
+    WCHAR driveName[] = {'c',':','\\','\0'};
 
     driveName[0] = drive;
     status = GetDiskFreeSpaceExW(driveName, &avail, &total, &freebytes);
-- 
1.7.7.3