tdf#112634 avoid crash

Change-Id: If4b8b24908eecc8267d7b74810f5afe4b1f79e4d
Reviewed-on: https://gerrit.libreoffice.org/43139Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Szymon Kłos <szymon.klos@collabora.com>

sw/source/uibase/dbui/dbtree.cxx

@@ -196,7 +196,11 @@ void SwDBTreeList::InitTreeList()
     for(long i = 0; i < nCount; i++)
     {
         OUString sDBName(pDBNames[i]);
-        InsertEntry(sDBName, aImg, aImg, nullptr, true);
+        Reference<XConnection> xConnection = pImpl->GetConnection(sDBName);
+        if (xConnection.is())
+        {
+            InsertEntry(sDBName, aImg, aImg, nullptr, true);
+        }
     }
     Select(OUString(), OUString(), OUString());
 
@@ -361,11 +365,6 @@ void  SwDBTreeList::RequestingChildren(SvTreeListEntry* pParent)
                         }
                     }
                 }
-                else
-                {
-                    // Defunct connection entry
-                    RemoveEntry(pParent);
-                }
             }
             catch (const Exception&)
             {