Jonathan Nieder 96a60a8709 vcs-svn: suppress a signed/unsigned comparison warning ...

All callers pass a nonnegative delta_len, so the code is already safe.
Add an assertion to ensure that remains so and add a cast to keep
clang and gcc -Wsign-compare from worrying.

Reported-by: David Barr <davidbarr@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>

2012-07-05 23:26:53 -05:00

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