[PATCH 2/2] branch: drop unused worktrees variable

[Jeff King <peff@peff.net>]

After b489b9d9aa (branch: use branch_checked_out() when deleting refs,
2022-06-14), we no longer look at our local "worktrees" variable, since
branch_checked_out() handles it under the hood. The compiler didn't
notice the unused variable because we call functions to initialize and
free it (so it's not totally unused, it just doesn't do anything
useful).

Signed-off-by: Jeff King <peff@peff.net>
---
It would be neat if there was some way to mark a function as "this is
just allocating a structure, with no useful side effects" and another as
"this is just freeing", which would let the compiler notice that we
don't do anything useful with the structure in between the two. I have a
feeling adding such annotations might be more work than occasionally
finding and cleaning up such useless variables, though. :)

 builtin/branch.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/builtin/branch.c b/builtin/branch.c
index f875952e7b..55cd9a6e99 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -204,7 +204,6 @@ static void delete_branch_config(const char *branchname)
 static int delete_branches(int argc, const char **argv, int force, int kinds,
 			   int quiet)
 {
-	struct worktree **worktrees;
 	struct commit *head_rev = NULL;
 	struct object_id oid;
 	char *name = NULL;
@@ -242,8 +241,6 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 			die(_("Couldn't look up commit object for HEAD"));
 	}
 
-	worktrees = get_worktrees();
-
 	for (i = 0; i < argc; i++, strbuf_reset(&bname)) {
 		char *target = NULL;
 		int flags = 0;
@@ -314,7 +311,6 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 
 	free(name);
 	strbuf_release(&bname);
-	free_worktrees(worktrees);
 
 	return ret;
 }
-- 
2.37.0.rc1.385.g5f9aa3aa78