kernel32/tests: remove unused assignment (LLVM/Clang)

[Austin English]

-- 
-Austin
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diff --git a/dlls/kernel32/tests/change.c b/dlls/kernel32/tests/change.c
index 8e22dd7..4d0bc1c 100644
--- a/dlls/kernel32/tests/change.c
+++ b/dlls/kernel32/tests/change.c
@@ -47,7 +47,7 @@ static DWORD CALLBACK NotificationThread(LPVOID arg)
 
     if (status == WAIT_OBJECT_0 ) {
         notified = TRUE;
-        ret = FindNextChangeNotification(change);
+        FindNextChangeNotification(change);
     }
 
     ret = FindCloseChangeNotification(change);