Don't crash if fine-tuned model doesn't end with a number (#3099)

That's the same fix applied in https://github.com/huggingface/transformers/issues/2258 , but for the GLUE example

examples/run_glue.py

@@ -183,8 +183,11 @@ def train(args, train_dataset, model, tokenizer):
     steps_trained_in_current_epoch = 0
     # Check if continuing training from a checkpoint
     if os.path.exists(args.model_name_or_path):
-        # set global_step to gobal_step of last saved checkpoint from model path
+        # set global_step to global_step of last saved checkpoint from model path
+        try:
             global_step = int(args.model_name_or_path.split("-")[-1].split("/")[0])
+        except ValueError:
+            global_step = 0
         epochs_trained = global_step // (len(train_dataloader) // args.gradient_accumulation_steps)
         steps_trained_in_current_epoch = global_step % (len(train_dataloader) // args.gradient_accumulation_steps)