CppunitTest_sw_odfexport: fix non-charborder-related issues in charborder.odt

- style:border-line-width's first value should be positive (follow-up
  fix could be to handle such existing documents, but this is a test
  document, so let's just modify it)
- style:contextual-spacing is written as loext:contextual-spacing today

Change-Id: I4463ad83d45bb85f39257cc5bfda96ae1ef2c2a1

sw/qa/extras/odfexport/odfexport.cxx

@@ -188,7 +188,7 @@ DECLARE_ODFEXPORT_TEST(testCharacterBorder, "charborder.odt")
 
     // Paragraph border of first paragraph
     {
-        const table::BorderLine2 aFirstParTopBorder(0x6666FF,0,26,26,7,53);
+        const table::BorderLine2 aFirstParTopBorder(0x6666FF,2,26,26,7,55);
         const sal_Int32 aFirstParTopPadding(150);
         uno::Reference<beans::XPropertySet> xSet(getParagraph(1), uno::UNO_QUERY);