g_clear_pointer(NULL, g_error_free)

The SVG loader produces a sigsegv error when a call to rsvg_handle_write() fails.

I found this upon upgrade to Beowulf, spacefm crashes reading an .svg file.

I fixed it like so:

--- librsvg2-common/librsvg-2.44.10/gdk-pixbuf-loader/io-svg.c.orig
+++ librsvg2-common/librsvg-2.44.10/gdk-pixbuf-loader/io-svg.c
@@ -131,7 +131,8 @@
         }
 
         if (!rsvg_handle_write (context->handle, buf, size, error)) {
-                g_clear_pointer(error, g_error_free);
+                if (error)
+                        g_clear_pointer(error, g_error_free);
                 rsvg_propagate_error (error, _("Error writing"), ERROR_WRITING);
                 return FALSE;
         }