[PATCH] transport: Catch non positive --depth option value

["\"Andrés G. Aragoneses\"" <knocte@gmail.com>]

Instead of simply ignoring the value passed to --depth
option when it is zero or negative, now it is caught
and reported.

This will let people know that they were using the
option incorrectly (as depth<0 should be simply invalid,
and under the hood depth==0 didn't mean 'no depth' or
'no history' but 'full depth' instead).

Signed-off-by: Andres G. Aragoneses <knocte@gmail.com>
---
  transport.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/transport.c b/transport.c
index 7202b77..edd63eb 100644
--- a/transport.c
+++ b/transport.c
@@ -483,6 +483,8 @@ static int set_git_option(struct 
git_transport_options *opts,
  			opts->depth = strtol(value, &end, 0);
  			if (*end)
  				die("transport: invalid depth option '%s'", value);
+			if (opts->depth < 1)
+				die("transport: invalid depth option '%s' (non positive)", value);
  		}
  		return 0;
  	}
-- 
1.8.1.2