Update Lib/tarfile.py

Co-authored-by: Stan Ulbrych <stan@python.org>

Author: encukou

Lib/tarfile.py

@@ -546,8 +546,8 @@ def seek(self, pos=0):
         if pos - self.pos >= 0:
             blocks, remainder = divmod(pos - self.pos, self.bufsize)
             for i in range(blocks):
-                size = self.read(self.bufsize)
-                if not size:
+                data = self.read(self.bufsize)
+                if not data:
                     break
             self.read(remainder)
         else: