zlib: fix use after null when calling .close

An internal zlib error may cause _handle to be set to null. Close now will check if there is a _handle prior to calling .close on it. PR-URL: #5982 Fixes: #6034 Reviewed-By: Brian White <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
nodejs · May 17, 2016 · 0cc1e0f · 0cc1e0f
1 parent 54747f1
commit 0cc1e0f
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/zlib.js b/lib/zlib.js
@@ -462,7 +462,9 @@ Zlib.prototype.close = function(callback) {
 
   this._closed = true;
 
-  this._handle.close();
+  if (this._handle) {
+    this._handle.close();
+  }
 
   process.nextTick(emitCloseNT, this);
 };