Fix diffing between blobs and null.

diff --git a/scripts/tracediff2.py b/scripts/tracediff2.py
index 0f59d87983df51be1a23bb8400c3c601d172402b..255191e8c5bf93bd9a744ef558b4c28e7f386e2d 100755 (executable)
--- a/scripts/tracediff2.py
+++ b/scripts/tracediff2.py
@@ -58,7 +58,7 @@ class Blob:
         return 'blob(%u)' % self.size
 
     def __eq__(self, other):
-        return self.size == other.size and self.hash == other.hash
+        return isinstance(other, Blob) and self.size == other.size and self.hash == other.hash
 
     def __hash__(self):
         return self.hash