fix check for exceeded quota on Google Drive (#3710)

* fix check for exceeded quota on Google Drive

* safeguard quota exceed check

Author: pmeier

torchvision/datasets/utils.py

@@ -175,9 +175,11 @@ def list_files(root: str, suffix: str, prefix: bool = False) -> List[str]:
 
 
 def _quota_exceeded(response: "requests.models.Response") -> bool:  # type: ignore[name-defined]
-    return False
-    # See https://github.com/pytorch/vision/issues/2992 for details
-    # return "Google Drive - Quota exceeded" in response.text
+    try:
+        start = next(response.iter_content(chunk_size=128, decode_unicode=True))
+        return isinstance(start, str) and "Google Drive - Quota exceeded" in start
+    except StopIteration:
+        return False
 
 
 def download_file_from_google_drive(file_id: str, root: str, filename: Optional[str] = None, md5: Optional[str] = None):