use alloc_ref_from_str() everywhere

Replace pairs of alloc_ref() and strcpy() with alloc_ref_from_str(),
simplifying the code.

In connect.c, also a pair of alloc_ref() and memcpy() is replaced --
the additional cost of a strlen() call should not have too much of an
impact.  Consistency and simplicity are more important.

In remote.c, the code was allocating 11 bytes more than needed for
the name part, but I couldn't see them being used for anything.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

3 files changed, 4 insertions, 8 deletions

diff --git a/connect.c b/connect.c
index 67d2cd86a8..b69060bca0 100644
--- a/connect.c
+++ b/connect.c
@@ -90,9 +90,8 @@ struct ref **get_remote_heads(int in, struct ref **list,
 			continue;
 		if (nr_match && !path_match(name, nr_match, match))
 			continue;
-		ref = alloc_ref(name_len + 1);
+		ref = alloc_ref_from_str(buffer + 41);
 		hashcpy(ref->old_sha1, old_sha1);
-		memcpy(ref->name, buffer + 41, name_len + 1);
 		*list = ref;
 		list = &ref->next;
 	}
diff --git a/remote.c b/remote.c
index 98cbcf94c3..44d681da08 100644
--- a/remote.c
+++ b/remote.c
@@ -878,8 +878,7 @@ static struct ref *try_explicit_object_name(const char *name)
 	struct ref *ref;
 
 	if (!*name) {
-		ref = alloc_ref(20);
-		strcpy(ref->name, "(delete)");
+		ref = alloc_ref_from_str("(delete)");
 		hashclr(ref->new_sha1);
 		return ref;
 	}
diff --git a/transport.c b/transport.c
index 5110c56c4e..3d034759bf 100644
--- a/transport.c
+++ b/transport.c
@@ -75,7 +75,7 @@ static int read_loose_refs(struct strbuf *path, int name_offset,
 
 			if (fd < 0)
 				continue;
-			next = alloc_ref(path->len - name_offset + 1);
+			next = alloc_ref_from_str(path->buf + name_offset);
 			if (read_in_full(fd, buffer, 40) != 40 ||
 					get_sha1_hex(buffer, next->old_sha1)) {
 				close(fd);
@@ -83,7 +83,6 @@ static int read_loose_refs(struct strbuf *path, int name_offset,
 				continue;
 			}
 			close(fd);
-			strcpy(next->name, path->buf + name_offset);
 			(*tail)->next = next;
 			*tail = next;
 		}
@@ -127,14 +126,13 @@ static void insert_packed_refs(const char *packed_refs, struct ref **list)
 				      (*list)->next->name)) > 0)
 			list = &(*list)->next;
 		if (!(*list)->next || cmp < 0) {
-			struct ref *next = alloc_ref(len - 40);
+			struct ref *next = alloc_ref_from_str(buffer + 41);
 			buffer[40] = '\0';
 			if (get_sha1_hex(buffer, next->old_sha1)) {
 				warning ("invalid SHA-1: %s", buffer);
 				free(next);
 				continue;
 			}
-			strcpy(next->name, buffer + 41);
 			next->next = (*list)->next;
 			(*list)->next = next;
 			list = &(*list)->next;