vint: check for bytes after read

Signed-off-by: Rob Browning <rlb@defaultvalue.org>
Tested-by: Rob Browning <rlb@defaultvalue.org>

diff --git a/lib/bup/vint.py b/lib/bup/vint.py
index cb7225d88e3ddf801c5ce727b3f60560892ae804..143e5b6c75647e46bdbb3ed0bcdc3dbef35ef45b 100644 (file)
--- a/lib/bup/vint.py
+++ b/lib/bup/vint.py
@@ -36,6 +36,7 @@ def read_vuint(port):
     c = port.read(1)
     if not c:
         raise EOFError('encountered EOF while reading vuint')
+    assert isinstance(c, bytes)
     if ord(c) == 0:
         return 0
     result = 0
@@ -79,6 +80,7 @@ def read_vint(port):
     c = port.read(1)
     if not c:
         raise EOFError('encountered EOF while reading vint')
+    assert isinstance(c, bytes)
     negative = False
     result = 0
     offset = 0