stream: Relocate the status checking code in the onWriteComplete

Modified the code to check the status before verifying if the stream is
destroyed.

Author: yoonsooshin

lib/internal/stream_base_commons.js

@@ -83,20 +83,18 @@ function onWriteComplete(status) {
 
   const stream = this.handle[owner_symbol];
 
-  if (stream.destroyed) {
-    if (typeof this.callback === 'function')
-      this.callback(null);
-    return;
+  if (status < 0) {
+    const error = new ErrnoException(status, 'write', this.error);
+    if (typeof this.callback === 'function') {
+      return this.callback(error);
+    }
+
+    return stream.destroy(error);
   }
 
-  // TODO (ronag): This should be moved before if(stream.destroyed)
-  // in order to avoid swallowing error.
-  if (status < 0) {
-    const ex = new ErrnoException(status, 'write', this.error);
+  if (stream.destroyed) {
     if (typeof this.callback === 'function')
-      this.callback(ex);
-    else
-      stream.destroy(ex);
+      this.callback(null);
     return;
   }