fix some leaks

Change-Id: I06a3971d1d269b49b2a7954f977469fbc3d16f35
Reviewed-on: https://gerrit.libreoffice.org/42721
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
diff --git a/vcl/unx/gtk3/gtk3gtkinst.cxx b/vcl/unx/gtk3/gtk3gtkinst.cxx
index 7c88027..01ec0a1 100644
--- a/vcl/unx/gtk3/gtk3gtkinst.cxx
+++ b/vcl/unx/gtk3/gtk3gtkinst.cxx
@@ -106,7 +106,10 @@ std::vector<css::datatransfer::DataFlavor> GtkTransferable::getTransferDataFlavo

        // omit text/plain;charset=unicode since it is not well defined
        if (rtl_str_compare(pName, "text/plain;charset=unicode") == 0)
        {
            g_free(pName);
            continue;
        }

        for (size_t j = 0; j < SAL_N_ELEMENTS(aConversionTab); ++j)
        {
@@ -122,6 +125,7 @@ std::vector<css::datatransfer::DataFlavor> GtkTransferable::getTransferDataFlavo
        // them out for now before they confuse this code's clients:
        if (rtl_str_indexOfChar(pFinalName, '/') == -1)
        {
            g_free(pName);
            continue;
        }