setupapi: Avoid hardcoding the Unicode string literal lengths.

[Francois Gouget]

Also make it static const.
---
 dlls/setupapi/queue.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/dlls/setupapi/queue.c b/dlls/setupapi/queue.c
index d302924..cd733a0 100644
--- a/dlls/setupapi/queue.c
+++ b/dlls/setupapi/queue.c
@@ -978,7 +978,7 @@ static BOOL do_file_copyW( LPCWSTR source, LPCWSTR target, DWORD style,
             VS_FIXEDFILEINFO *TargetInfo;
             VS_FIXEDFILEINFO *SourceInfo;
             UINT length;
-            WCHAR  SubBlock[2]={'\\',0};
+            static const WCHAR SubBlock[]={'\\',0};
             DWORD  ret;
 
             VersionSource = HeapAlloc(GetProcessHeap(),0,VersionSizeSource);
-- 
1.7.7.3