Enable LSAN in CI

To check for leaks

.kde-ci.yml

@@ -9,3 +9,4 @@ Options:
  require-passing-tests-on: ['Linux', 'FreeBSD', 'Windows']
  cmake-options: "-DKIMAGEFORMATS_WITH_KNOWN_CRASHES_JXR=ON -DKIMAGEFORMATS_HEIF=ON -DKIMAGEFORMATS_HEIF_TEST:STRING=OFF -DKIMAGEFORMATS_HEJ2_TEST:STRING=OFF -DKIMAGEFORMATS_AVCI_TEST:STRING=OFF"
  per-test-timeout: 90
+ enable-lsan: True

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.29)
 
-set(KF_VERSION "6.28.1") # handled by release scripts
+set(KF_VERSION "6.29.0") # handled by release scripts
 set(KF_DEP_VERSION "6.28.0") # handled by release scripts
 project(KImageFormats VERSION ${KF_VERSION})
 

src/imageformats/heif.cpp

@@ -711,8 +711,7 @@ bool HEIFHandler::ensureDecoder()
         buffer = deviceRead(dev, kMaxQVectorSize);
         err = heif_context_read_from_memory(ctx, static_cast<const void *>(buffer.constData()), buffer.size(), nullptr);
     } else {
-        // Must not be destroyed until decoding ends
-        static const heif_reader reader = create_heif_reader_for_qiodevice();
+        heif_reader reader = create_heif_reader_for_qiodevice();
         err = heif_context_read_from_reader(ctx, &reader, dev, nullptr);
     }
     if (err.code) {