--rect test bug fix

utils/datasets.py

@@ -343,6 +343,7 @@ class LoadImagesAndLabels(Dataset):  # for training/testing
             irect = ar.argsort()
             self.img_files = [self.img_files[i] for i in irect]
             self.label_files = [self.label_files[i] for i in irect]
+            self.labels = [self.labels[i] for i in irect]
             self.shapes = s[irect]  # wh
             ar = ar[irect]