Unknown memory leakage.

[oddman621]

[Environment]
Windows 11 x64
Zig 0.15.2
GLFW with OpenGL 3

[Code]

// build.zig
const std = @import("std");

pub fn build(b: *std.Build) void {
    // ...
    const zgui = b.dependency("zgui", .{
        .shared = false,
        .backend = @import("zgui").Backend.glfw_opengl3,
    });
    // ...
}

// main.zig
const std = @import("std");
const gl = @import("zgl");
const glfw = @import("zglfw");
const zgui = @import("zgui");

pub fn main() !void {
    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    defer _ = gpa.deinit();
    const allocator = gpa.allocator();

    try glfw.init();
    const window = try glfw.createWindow(640, 480, "Test Zgui Init", null);
    glfw.makeContextCurrent(window);
    glfw.swapInterval(1);
    try gl.loadExtensions(null, getProcAddr);
    zgui.init(allocator);
    zgui.backend.init(window);

    // deinit without 'defer'
    zgui.backend.deinit();
    zgui.deinit();
    glfw.destroyWindow(window);
    glfw.terminate();
}

fn getProcAddr(_: anytype, proc_name: [:0]const u8) ?*const anyopaque {
    return glfw.getProcAddress(proc_name);
}

[Result]

> zig build run
info: [zgui] Possible memory leak or static memory usage detected: (address: 0x25be45f0000, size: 128)

Where does this leak come from, even didn't do anything with zgui except init/deinit?