Remove GIT_PKT_PACK entirely

(cherry picked from commit 90cf8607)

src/transports/smart.h

@@ -40,7 +40,7 @@ enum git_pkt_type {
 	GIT_PKT_HAVE,
 	GIT_PKT_ACK,
 	GIT_PKT_NAK,
-	GIT_PKT_PACK,
+	GIT_PKT_PACK__UNUSED,
 	GIT_PKT_COMMENT,
 	GIT_PKT_ERR,
 	GIT_PKT_DATA,

src/transports/smart_pkt.c

@@ -86,19 +86,6 @@ static int nak_pkt(git_pkt **out)
 	return 0;
 }
 
-static int pack_pkt(git_pkt **out)
-{
-	git_pkt *pkt;
-
-	pkt = git__malloc(sizeof(git_pkt));
-	GITERR_CHECK_ALLOC(pkt);
-
-	pkt->type = GIT_PKT_PACK;
-	*out = pkt;
-
-	return 0;
-}
-
 static int comment_pkt(git_pkt **out, const char *line, size_t len)
 {
 	git_pkt_comment *pkt;
@@ -378,7 +365,7 @@ static int32_t parse_len(const char *line)
 					num[k] = '.';
 				}
 			}
-			
+
 			giterr_set(GITERR_NET, "invalid hex digit in length: '%s'", num);
 			return -1;
 		}
@@ -415,17 +402,7 @@ int git_pkt_parse_line(
 
 	len = parse_len(line);
 	if (len < 0) {
-		/*
-		 * If we fail to parse the length, it might be because the
-		 * server is trying to send us the packfile already.
-		 */
-		if (bufflen >= 4 && !git__prefixcmp(line, "PACK")) {
-			giterr_clear();
-			*out = line;
-			return pack_pkt(head);
-		}
-
-		return (int)len;
+		return GIT_ERROR;
 	}
 
 	/*