Fix deflateEnd() to not report an error at start of raw deflate.

rlidwka · rlidwka · commit 8a1cdad62bd3 · 2022-06-10T20:10:56.000+03:00
madler/zlib@c376a41
diff --git a/lib/zlib/deflate.js b/lib/zlib/deflate.js
@@ -1589,6 +1589,9 @@ const deflate = (strm, flush) => {
   }
 
   /* Write the header */
+  if (s.status === INIT_STATE && s.wrap === 0) {
+    s.status = BUSY_STATE;
+  }
   if (s.status === INIT_STATE) {
     /* zlib header */
     let header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;
