Janitor - fix differ in signedness warning

diff --git a/lib/gvc/gvdevice.c b/lib/gvc/gvdevice.c
index 613d54055fc491af769f8195421072d4cfcd1f8d..56858a6f5fb6598c90a4b52a18e2857d57fa2b11 100644 (file)
--- a/lib/gvc/gvdevice.c
+++ b/lib/gvc/gvdevice.c
@@ -80,7 +80,7 @@ void gvdevice_printf(GVJ_t * job, const char *format, ...)
 size_t gvdevice_write (GVJ_t * job, const unsigned char *s, unsigned int len)
 {
     if (job->gvc->write_fn && job->output_file == stdout)   /* externally provided write dicipline */
-       return (job->gvc->write_fn)(s, len);
+       return (job->gvc->write_fn)((char*)s, len);
     if (job->flags & GVDEVICE_COMPRESSED_FORMAT) {
 #ifdef HAVE_LIBZ
        return gzwrite((gzFile *) (job->output_file), s, len);