Fix timeout faults after extension crash

lib/extensions.js

@@ -45,14 +45,14 @@ function run(args, callback) {
     processes[scriptName] = p;
 
     p.on('error', function() {
-      if (process[scriptName] === p) {
+      if (processes[scriptName] === p) {
         kill(processes[scriptName]);
         delete processes[scriptName];
       }
     });
 
     p.on('disconnect', function() {
-      if (process[scriptName] === p) {
+      if (processes[scriptName] === p) {
         kill(processes[scriptName]);
         delete processes[scriptName];
       }