debugger: Fix bug in sb() with unnamed script

setBreakpoint() cause error when unnamed script is loaded

diff --git a/lib/_debugger.js b/lib/_debugger.js
index 8be2d1e..6202155 100644 (file)
--- a/lib/_debugger.js
+++ b/lib/_debugger.js
@@ -1374,7 +1374,9 @@ Interface.prototype.setBreakpoint = function(script, line,
     if (script != +script && !this.client.scripts[script]) {
       var scripts = this.client.scripts;
       Object.keys(scripts).forEach(function(id) {
-        if (scripts[id] && scripts[id].name.indexOf(script) !== -1) {
+        if (scripts[id] &&
+            scripts[id].name &&
+            scripts[id].name.indexOf(script) !== -1) {
           if (scriptId) {
             ambiguous = true;
           }