gvconfig: squash a -Wsign-conversion warning

diff --git a/lib/gvc/gvconfig.c b/lib/gvc/gvconfig.c
index 78b8789ed6a7bbeb43df0d5d41b0e01f08ed51fe..57eb956fe36663cafe8c5a579dca783ee21942f7 100644 (file)
--- a/lib/gvc/gvconfig.c
+++ b/lib/gvc/gvconfig.c
@@ -605,7 +605,7 @@ void gvconfig(GVC_t * gvc, boolean rescan)
                return;
            }
            else {
-               config_text = gmalloc(config_st.st_size + 1);
+               config_text = gmalloc((size_t)config_st.st_size + 1);
                sz = fread(config_text, 1, config_st.st_size, f);
                if (sz == 0) {
                    agerr(AGERR,"%s is zero sized, or other read error.\n", gvc->config_path);