[PATCH GSoC v20 05/13] fetch-pack: use unsigned int for hash_algo variable

hash_algo_by_name() returns unsigned int, but it is stored in
hash_algo variable as int. This goes unnoticed because of:

	DISABLE_SIGN_COMPARE_WARNINGS

On 'fetch-pack.c'

On a subsequent commit this function will be moved to 'connect.c' that
would notice this.

Change hash_algo variable type to match its return type, also make it
const because they are never modified.

Signed-off-by: Pablo Sabater <redacted>
---
 fetch-pack.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fetch-pack.c b/fetch-pack.c
index 65ebfec09f..f1e64160fc 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c

@@ -1397,7 +1397,7 @@ static void write_fetch_command_and_capabilities(struct strbuf *req_buf,
 	}
 
 	if (server_feature_v2("object-format", &hash_name)) {
-		int hash_algo = hash_algo_by_name(hash_name);
+		const unsigned int hash_algo = hash_algo_by_name(hash_name);
 		if (hash_algo_by_ptr(the_hash_algo) != hash_algo)
 			die(_("mismatched algorithms: client %s; server %s"),
 			    the_hash_algo->name, hash_name);

-- 
2.54.0