kernel32: initialize return value in CreateSemaphoreExW

[Austin English]

For https://bugs.winehq.org/show_bug.cgi?id=33125

-- 
-Austin
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diff --git a/dlls/kernel32/sync.c b/dlls/kernel32/sync.c
index d363e1f..d9f69c3 100644
--- a/dlls/kernel32/sync.c
+++ b/dlls/kernel32/sync.c
@@ -777,7 +777,7 @@ HANDLE WINAPI DECLSPEC_HOTPATCH CreateSemaphoreExA( SECURITY_ATTRIBUTES *sa, LON
 HANDLE WINAPI DECLSPEC_HOTPATCH CreateSemaphoreExW( SECURITY_ATTRIBUTES *sa, LONG initial, LONG max,
                                                     LPCWSTR name, DWORD flags, DWORD access )
 {
-    HANDLE ret;
+    HANDLE ret = 0;
     UNICODE_STRING nameW;
     OBJECT_ATTRIBUTES attr;
     NTSTATUS status;