Merge pull request #760 from kilpatty/node-http-reset-enforce

node-http: add check for height being below tip

lib/node/http.js

@@ -339,6 +339,8 @@ class HTTP extends Server {
       const height = valid.u32('height');
 
       enforce(height != null, 'Height is required.');
+      enforce(height <= this.chain.height,
+        'Height cannot be greater than chain tip.');
 
       await this.chain.reset(height);