Merge pull request #13337 from Snuffleupagus/PredictorStream-super

[Regression] Move the `super`-call in the `PredictorStream`-constructor to prevent errors (PR 13303)
mozilla · May 5, 2021 · 5296119 · 5296119
2 parents a00913a + 99fae47
commit 5296119
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/core/predictor_stream.js b/src/core/predictor_stream.js
@@ -19,19 +19,19 @@ import { isDict } from "./primitives.js";
 
 class PredictorStream extends DecodeStream {
   constructor(str, maybeLength, params) {
+    super(maybeLength);
+
     if (!isDict(params)) {
       return str; // no prediction
     }
-    const predictor = params.get("Predictor") || 1;
+    const predictor = (this.predictor = params.get("Predictor") || 1);
 
     if (predictor <= 1) {
       return str; // no prediction
     }
     if (predictor !== 2 && (predictor < 10 || predictor > 15)) {
       throw new FormatError(`Unsupported predictor: ${predictor}`);
     }
-    super(maybeLength);
-    this.predictor = predictor;
 
     if (predictor === 2) {
       this.readBlock = this.readBlockTiff;