[Cherry-pick for 0.18] [FBcode -> GH] Fix fetch_png_exif_orientation #8345 (#8356)

NicolasHug · web-flow · commit 21a7a7c753b9 · 2024-03-28T11:47:42.000Z
diff --git a/torchvision/csrc/io/image/cpu/exif.h b/torchvision/csrc/io/image/cpu/exif.h
@@ -215,6 +215,7 @@ inline int fetch_png_exif_orientation(png_structp png_ptr, png_infop info_ptr) {
   if (exif && num_exif > 0) {
     return fetch_exif_orientation(exif, num_exif);
   }
+  return -1;
 }
 #else // #if PNG_FOUND && defined(PNG_eXIf_SUPPORTED)
 inline int fetch_png_exif_orientation(png_structp png_ptr, png_infop info_ptr) {

Original file line number	Diff line number	Diff line change
`@@ -215,6 +215,7 @@ inline int fetch_png_exif_orientation(png_structp png_ptr, png_infop info_ptr) {`
`215`	`215`	`if (exif && num_exif > 0) {`
`216`	`216`	`return fetch_exif_orientation(exif, num_exif);`
`217`	`217`	`}`
	`218`	`+ return -1;`
`218`	`219`	`}`
`219`	`220`	`#else // #if PNG_FOUND && defined(PNG_eXIf_SUPPORTED)`
`220`	`221`	`inline int fetch_png_exif_orientation(png_structp png_ptr, png_infop info_ptr) {`