make sure gcc does not thing gridind may be undefined

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@746 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index ba0460e..a762b25 100644 (file)
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -1527,7 +1527,7 @@ calc_horizontal_grid(image_desc_t   *im)
     double   range;
     double   scaledrange;
     int      pixel,i;
-    int      gridind;
+    int      gridind=0;
     int      decimals, fractionals;
 
     im->ygrid_scale.labfact=2;