[Minor] Filter yvalues for graph more precisely

diff --git a/src/controller.c b/src/controller.c
index abb6ebe81496e53d44c9860d9579559319c6366f..a0619674ddfffcd6a08ece534031211c97ed737f 100644 (file)
--- a/src/controller.c
+++ b/src/controller.c
@@ -1150,7 +1150,7 @@ rspamd_controller_graph_point (gulong t, gulong step,
 
                for (j = 0; j < step; j++) {
                        yval = acc[i + j * rrd_result->ds_count];
-                       if (isnan (yval)) {
+                       if (!isnormal (yval)) {
                                nan_cnt++;
                        }
                        else {