coverity#1430091 Unchecked return value

Change-Id: Id72d3c6714a8c74502247eed9c23c7cf8b5412f4
Reviewed-on: https://gerrit.libreoffice.org/51543Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

svx/qa/unit/XTableImportExportTest.cxx

@@ -68,7 +68,8 @@ void XTableImportExportTest::testImportExport()
 
     {
         XBitmapList xBitmapList(aTempURL, "REF");
-        xBitmapList.Load();
+        bool bResult = xBitmapList.Load();
+        CPPUNIT_ASSERT(bResult);
         uno::Reference<container::XNameContainer> xNameContainer(xBitmapList.createInstance());
         CPPUNIT_ASSERT(xNameContainer.is());