Let Iter hold onto its own allocator

src/iter.zig

@@ -1,5 +1,7 @@
+const std = @import("std");
+const Allocator = std.mem.Allocator;
+
 const c = @import("./c.zig");
-const flecszigble = @import("./main.zig");
 
 pub fn Iter(comptime ctx: anytype) type {
     return struct {
@@ -12,21 +14,21 @@ pub fn Iter(comptime ctx: anytype) type {
 
         world: *World,
         raw: *c.ecs_iter_t,
-        owned: bool,
+        allocator: ?Allocator,
 
         pub fn fromRawPtr(world: *World, ptr: *c.ecs_iter_t) Self {
-            return .{ .world = world, .raw = ptr, .owned = false };
+            return .{ .world = world, .raw = ptr, .allocator = null };
         }
 
-        pub fn fromRawValue(world: *World, value: c.ecs_iter_t) !Self {
-            const raw = try flecszigble.allocator.create(c.ecs_iter_t);
+        pub fn fromRawValue(world: *World, value: c.ecs_iter_t, allocator: Allocator) !Self {
+            const raw = try allocator.create(c.ecs_iter_t);
             raw.* = value;
-            return .{ .world = world, .raw = raw, .owned = true };
+            return .{ .world = world, .raw = raw, .allocator = allocator };
         }
 
         pub fn deinit(self: Self) void {
             if (self.isValid()) c.ecs_iter_fini(self.raw);
-            if (self.owned) flecszigble.allocator.destroy(self.raw);
+            if (self.allocator) |alloc| alloc.destroy(self.raw);
         }
 
         pub fn isValid(self: Self) bool {