wide chars should better be unsigned

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@638 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/src/rrd_gfx.c b/src/rrd_gfx.c
index 478d70c..f4c04ef 100644 (file)
--- a/src/rrd_gfx.c
+++ b/src/rrd_gfx.c
@@ -389,7 +389,7 @@ gfx_string gfx_string_create(gfx_canvas_t *canvas, FT_Face face,const char *text
   /* conversion did not work, so lets fall back to just use what we got */
        string->count=clen-1;
         for(n=0;text[n] != '\0';n++){
-            cstr[n]=text[n];
+            cstr[n]=(unsigned char)text[n];
         }
   }
 #else