trivial: retval of waitpid is not errno

...but is used as such and passed to strerror.

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

fetch-clone.c

@@ -47,7 +47,7 @@ static int finish_pack(const char *pack_tmp_name, const char *me)
 		if (retval < 0) {
 			if (errno == EINTR)
 				continue;
-			error("waitpid failed (%s)", strerror(retval));
+			error("waitpid failed (%s)", strerror(errno));
 			goto error_die;
 		}
 		if (WIFSIGNALED(status)) {