swap_perc: check for division by zero on obsd too

diff --git a/components/swap.c b/components/swap.c
index 465ffd4..f5db667 100644 (file)
--- a/components/swap.c
+++ b/components/swap.c
@@ -188,6 +188,10 @@
 
                getstats(&total, &used);
 
+               if (total == 0) {
+                       return NULL;
+               }
+
                return bprintf("%d%%", 100 * used / total);
        }