Fix bug when GitHub does not send some data.

Author: xgalen

lib/webhooks.js

@@ -49,6 +49,12 @@ function startFromCommit(project, payload, send) {
   var config = pushJob(payload);
   var lastCommit = payload.commits[payload.commits.length - 1];
 
+  if (!lastCommit) {
+    lastCommit = {};
+  }
+  if (!lastCommit.message) {
+    lastCommit.message = 'No message.';
+  }
   if (lastCommit.message.indexOf('[skip ci]') > -1) {
     return {skipCi: true};
   }
@@ -160,6 +166,16 @@ function pushJob(payload) {
       fetch: payload.ref
     }
   }
+  if (!commit) {
+    commit = {};
+  }
+  if (!commit.author) {
+    commit.author = {
+      name: 'No name',
+      username: 'No login',
+      email: '[email protected]'
+    };
+  }
   trigger = {
     type: 'commit',
     author: {