Merge pull request #24793 from Kumataro:fix24792

imgcodecs: suppress warning at test_avif.cpp

modules/imgcodecs/test/test_avif.cpp

@@ -166,7 +166,7 @@ TEST_P(Imgcodecs_Avif_Image_EncodeDecodeSuite, imencode_imdecode) {
                  cv::Exception);
     return;
   }
-  bool result;
+  bool result = true;
   EXPECT_NO_THROW(
       result = cv::imencode(".avif", img_original, buf, encoding_params_););
   EXPECT_TRUE(result);