loplugin:simplifybool (clang-cl)

Change-Id: Id86ddcbed61df87f8da7a58972387d950d14634d
Reviewed-on: https://gerrit.libreoffice.org/45339Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

dtrans/source/win32/dtobj/FmtFilter.cxx

@@ -247,7 +247,7 @@ Sequence<sal_Int8> SAL_CALL TextHtmlToHTMLFormat(Sequence<sal_Int8> const & aTex
 {
     OSL_ASSERT(aTextHtml.getLength() > 0);
 
-    if (!(aTextHtml.getLength() > 0))
+    if (aTextHtml.getLength() <= 0)
         return Sequence<sal_Int8>();
 
     // fill the buffer with dummy values to calc the exact length