From aff0d563260a2eb20f0724197d5f29691b359d99 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Sun, 7 Jun 2020 11:56:04 +0200
Subject: [PATCH] Remove an unnecessary `RefSetCache.prototype.has()` call from
 `GlobalImageCache.getData`

We can simply attempt to get the data *directly*, and instead check the result, rather than first checking if it exists.
---
 src/core/image_utils.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/core/image_utils.js b/src/core/image_utils.js
index ea1090dff..2fbb93eb0 100644
--- a/src/core/image_utils.js
+++ b/src/core/image_utils.js
@@ -107,11 +107,10 @@ class GlobalImageCache {
   }
 
   getData(ref, pageIndex) {
-    if (!this._refCache.has(ref)) {
+    const pageIndexSet = this._refCache.get(ref);
+    if (!pageIndexSet) {
       return null;
     }
-    const pageIndexSet = this._refCache.get(ref);
-
     if (pageIndexSet.size < GlobalImageCache.NUM_PAGES_THRESHOLD) {
       return null;
     }