CheckWebQuery: Don't use OUString::createFromAscii for user input

Change-Id: I26803984c0a9e172aa4ceb7bfc9d26abb14ca207
Reviewed-on: https://gerrit.libreoffice.org/40173
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Jenkins <ci@libreoffice.org>
diff --git a/desktop/source/app/cmdlineargs.cxx b/desktop/source/app/cmdlineargs.cxx
index 6011b26..1a9bac2 100644
--- a/desktop/source/app/cmdlineargs.cxx
+++ b/desktop/source/app/cmdlineargs.cxx
@@ -231,7 +231,7 @@ CommandLineEvent CheckWebQuery(/* in,out */ OUString& arg, CommandLineEvent curE

        stream.Close();

        arg = OUString::createFromAscii(aResult.getStr());
        arg = OStringToOUString(aResult.makeStringAndClear(), osl_getThreadTextEncoding());
        return CommandLineEvent::ForceNew;
    }
    catch (...)