Avoid relying on OString(char const *) ctor's undocumented behavior

...of treating nullptr like an empty string

Change-Id: I41b8b88f27ed3d3c404781f897952b7d1e0e01e1
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/107279
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
diff --git a/ucb/source/ucp/webdav-neon/NeonUri.cxx b/ucb/source/ucp/webdav-neon/NeonUri.cxx
index c1c2634..f3f1421 100644
--- a/ucb/source/ucp/webdav-neon/NeonUri.cxx
+++ b/ucb/source/ucp/webdav-neon/NeonUri.cxx
@@ -49,24 +49,24 @@ using namespace webdav_ucp;
namespace {

const ne_uri g_sUriDefaultsHTTP  = { const_cast<char *>("http"),
                                     nullptr,
                                     nullptr,
                                     const_cast<char *>(""),
                                     const_cast<char *>(""),
                                     DEFAULT_HTTP_PORT,
                                     nullptr,
                                     const_cast<char *>(""),
                                     nullptr,
                                     nullptr };
const ne_uri g_sUriDefaultsHTTPS = { const_cast<char *>("https"),
                                     nullptr,
                                     nullptr,
                                     const_cast<char *>(""),
                                     const_cast<char *>(""),
                                     DEFAULT_HTTPS_PORT,
                                     nullptr,
                                     const_cast<char *>(""),
                                     nullptr,
                                     nullptr };
const ne_uri g_sUriDefaultsFTP   = { const_cast<char *>("ftp"),
                                     nullptr,
                                     nullptr,
                                     const_cast<char *>(""),
                                     const_cast<char *>(""),
                                     DEFAULT_FTP_PORT,
                                     nullptr,
                                     const_cast<char *>(""),
                                     nullptr,
                                     nullptr };
} // namespace