[PATCH] connect.c: fix leak in handle_ssh_variant

[Jeff King <peff@peff.net>]

When we see an error from split_cmdline(), we exit the
function without freeing the copy of the command string we
made.

This was sort-of introduced by 22e5ae5c8 (connect.c: handle
errors from split_cmdline, 2017-04-10). The leak existed
before that, but before that commit fixed the bug, we could
never trigger this else clause in the first place.

Signed-off-by: Jeff King <peff@peff.net>
---
This was meant to be part of the original patch in:

  http://public-inbox.org/git/20170411003554.2tjnn65vfco376kj@sigill.intra.peff.net/

but I posted two versions in quick succession and Junio picked up the
first one. :)

 connect.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/connect.c b/connect.c
index 568a35f75..cd21a1b6f 100644
--- a/connect.c
+++ b/connect.c
@@ -738,8 +738,10 @@ static void handle_ssh_variant(const char *ssh_command, int is_cmdline,
 			 * any longer.
 			 */
 			free(ssh_argv);
-		} else
+		} else {
+			free(p);
 			return;
+		}
 	}
 
 	if (!strcasecmp(variant, "plink") ||
-- 
2.13.0.rc0.363.g8726c260e