adjust for external API changes

go/images/orientation.go

@@ -21,7 +21,10 @@ func FixJpgOrientation(data []byte) (oriented []byte) {
 	}
 	angle := 0
 	flipMode := FlipDirection(0)
-	orient := tag.Int(0)
+	orient, err := tag.Int(0)
+	if err != nil {
+		return data
+	}
 	switch orient {
 	case topLeftSide:
 		// do nothing