kill another warning

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2@617 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/program/src/rrd_gfx.c b/program/src/rrd_gfx.c
index a241fc28bc9088dbd0d1e44e8cc5ac08405715df..eb46ba92121f775e487f11533ba86d7d76004694 100644 (file)
--- a/program/src/rrd_gfx.c
+++ b/program/src/rrd_gfx.c
@@ -1779,7 +1779,7 @@ static void eps_write_text(eps_state *state, gfx_node_t *node)
         if (ch > 255) {
             fputc('?', fp);
         } else if (ch >= 126 || ch < 32) {
-          fprintf(fp, "\\%03o", ch);
+          fprintf(fp, "\\%03o", (unsigned int)ch);
           lineLen += 3;
         } else {
           fputc(ch, fp);