[libgxps] print-converter: fix invalid memory access

[Paolo Borelli <pborelli src gnome org>]

commit b93514d62fb5fcc657a2e890054986731d1c28b7
Author: Paolo Borelli <pborelli gnome org>
Date:   Tue Jan 17 09:38:20 2017 +0100

    print-converter: fix invalid memory access
    
    "ext" is a pointer inside basename_lower, so we must free only
    once we are done using it.

 tools/gxps-print-converter.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tools/gxps-print-converter.c b/tools/gxps-print-converter.c
index 7b1fd16..e99993e 100644
--- a/tools/gxps-print-converter.c
+++ b/tools/gxps-print-converter.c
@@ -109,7 +109,6 @@ gxps_converter_print_converter_begin_document (GXPSConverter *converter,
         basename = g_path_get_basename (converter->input_filename);
         basename_lower = g_ascii_strdown (basename, -1);
         ext = g_strrstr (basename_lower, ".xps");
-        g_free (basename_lower);
 
         if (ext) {
                 gchar *name;
@@ -123,6 +122,7 @@ gxps_converter_print_converter_begin_document (GXPSConverter *converter,
                                                              gxps_converter_get_extension (converter));
         }
 
+        g_free (basename_lower);
         g_free (basename);
 }