Use CHECKERR in avifDecoderFindMetadata()

avifDecoderFindMetadata() returns avifResult, so it should use
CHECKERR() instead of CHECK().

src/read.c

diff --git a/src/read.c b/src/read.c
index adad097..c7d8ffa 100644
--- a/src/read.c
+++ b/src/read.c
@@ -994,7 +994,7 @@
             // Advance past Annex A.2.1's header
             BEGIN_STREAM(exifBoxStream, exifContents.data, exifContents.size);
             uint32_t exifTiffHeaderOffset;
-            CHECK(avifROStreamReadU32(&exifBoxStream, &exifTiffHeaderOffset)); // unsigned int(32) exif_tiff_header_offset;
+            CHECKERR(avifROStreamReadU32(&exifBoxStream, &exifTiffHeaderOffset), AVIF_RESULT_BMFF_PARSE_FAILED); // unsigned int(32) exif_tiff_header_offset;
 
             avifImageSetMetadataExif(image, avifROStreamCurrent(&exifBoxStream), avifROStreamRemainingBytes(&exifBoxStream));
         } else if (!decoder->ignoreXMP && !memcmp(item->type, "mime", 4) &&