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-rw-r--r--server/lib/util.js1
1 files changed, 1 insertions, 0 deletions
diff --git a/server/lib/util.js b/server/lib/util.js
index 87e2d54..6d43750 100644
--- a/server/lib/util.js
+++ b/server/lib/util.js
@@ -46,6 +46,7 @@ util.ip2num = function(dot) {
}
util.num2ip = function(num) {
+ if (! num) return ""
var d = num % 256;
for (var i = 3; i > 0; i--) {
num = Math.floor(num/256);