comctl32/tests: make sure to use a return value (LLVM/Clang) (4/6)

[Austin English]

-- 
-Austin
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diff --git a/dlls/comctl32/tests/status.c b/dlls/comctl32/tests/status.c
index 839b138..920d969 100644
--- a/dlls/comctl32/tests/status.c
+++ b/dlls/comctl32/tests/status.c
@@ -369,6 +369,7 @@ static void test_status_control(void)
 
     /* Set the Unicode format */
     r = SendMessage(hWndStatus, SB_SETUNICODEFORMAT, FALSE, 0);
+    expect(FALSE,r);
     r = SendMessage(hWndStatus, SB_GETUNICODEFORMAT, 0, 0);
     expect(FALSE,r);
     r = SendMessage(hWndStatus, SB_SETUNICODEFORMAT, TRUE, 0);