shlwapi: Uninitialized variable fix (Coverity)

[Andrew Talbot]

Changelog:
    shlwapi: Uninitialized variable fix (Coverity).

diff -urN a/dlls/shlwapi/assoc.c b/dlls/shlwapi/assoc.c
--- a/dlls/shlwapi/assoc.c	2006-10-06 19:38:06.000000000 +0100
+++ b/dlls/shlwapi/assoc.c	2007-01-20 17:10:29.000000000 +0000
@@ -376,7 +376,7 @@
                                       LPCSTR pszExtra, LPSTR pszOut,
                                       DWORD *pcchOut)
 {
-  WCHAR szExtraW[MAX_PATH], *lpszExtraW;
+  WCHAR szExtraW[MAX_PATH], *lpszExtraW = szExtraW;
   WCHAR szReturnW[MAX_PATH], *lpszReturnW = szReturnW;
   HRESULT hRet = E_OUTOFMEMORY;