fix(#1099): hexo server error when changing the config

Author: BuildTools

lib/plugins/processor/post.js

@@ -206,7 +206,12 @@ function parseFilename(config, path) {
   const data = permalink.parse(path);
 
   if (data) {
-    return data;
+    if (data.title !== undefined) {
+      return data;
+    }
+    return Object.assign(data, {
+      title: slugize(path)
+    });
   }
 
   return {