tdf#44282 fix missing space for numbered lists in TOC

Change-Id: I6baa6c775ac6142e4ba4197ce4d164628ef0ba1e
Reviewed-on: https://gerrit.libreoffice.org/27423
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: jan iversen <jani@documentfoundation.org>

sw/source/core/tox/ToxTextGenerator.cxx

@@ -87,6 +87,10 @@ ToxTextGenerator::GetNumStringOfFirstNode( const SwTOXSortTabBase& rBase, bool b
         sRet = pNd->GetNumString(bUsePrefix, nLevel);
     }
 
+    if(sRet != "") {
+        sRet += " ";// Makes sure spacing is done only when there is outline numbering
+    }
+
     return sRet;
 }