tdf#90315 RTF import: fix \colsx default value

See SectPageInformation::mnColsx on the libreoffice-3-6 branch + the
spec agrees, too.

Change-Id: I6f70a125f8d962621f319e3e75e2865e5f126859
(cherry picked from commit e18adb73)

sw/qa/extras/rtfimport/data/tdf90315.rtf

+{\rtf1\cols2
+foo\par
+bar\par
+}

sw/qa/extras/rtfimport/rtfimport.cxx

@@ -2292,6 +2292,15 @@ DECLARE_RTFIMPORT_TEST(testTdf86814, "tdf86814.rtf")
     CPPUNIT_ASSERT_EQUAL(awt::FontWeight::BOLD, getProperty<float>(getRun(getParagraph(1), 1), "CharWeight"));
 }
 
+DECLARE_RTFIMPORT_TEST(testTdf90315, "tdf90315.rtf")
+{
+    uno::Reference<text::XTextSectionsSupplier> xTextSectionsSupplier(mxComponent, uno::UNO_QUERY);
+    uno::Reference<container::XIndexAccess> xTextSections(xTextSectionsSupplier->getTextSections(), uno::UNO_QUERY);
+    uno::Reference<beans::XPropertySet> xTextSection(xTextSections->getByIndex(0), uno::UNO_QUERY);
+    // This was 0, but default should be 720 twips.
+    CPPUNIT_ASSERT_EQUAL(static_cast<sal_Int32>(1270), getProperty<sal_Int32>(xTextSection->getPropertyValue("TextColumns"), "AutomaticDistance"));
+}
+
 CPPUNIT_PLUGIN_IMPLEMENT();
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

writerfilter/source/dmapper/SectionColumnHandler.cxx

@@ -31,7 +31,7 @@ using namespace ::com::sun::star;
 SectionColumnHandler::SectionColumnHandler()
     : LoggedProperties("SectionColumnHandler")
     , bEqualWidth(false)
-    , nSpace(0)
+    , nSpace(1270) // 720 twips
     , nNum(0)
     , bSep(false)
 {