Crash when importing broken bmp file

[qarmin]

Godot version:
3.2.4.rc.custom_build. 8385a0d

OS/device including version:
Ubuntu 20.04

Issue description:
When trying to open broken bmp file, then Godot crashes with this backtrace:

[1] godots() [0x1736270] (/mnt/Miecz/godot3.2/platform/x11/crash_handler_x11.cpp:54)
[2] /lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7fd8a708d210] (??:0)
[3] ImageLoaderBMP::convert_to_image(Ref<Image>, unsigned char const*, unsigned char const*, unsigned int, ImageLoaderBMP::bmp_header_s const&) (/mnt/Miecz/godot3.2/modules/bmp/image_loader_bmp.cpp:133)
[4] ImageLoaderBMP::load_image(Ref<Image>, FileAccess*, bool, float) (/mnt/Miecz/godot3.2/modules/bmp/image_loader_bmp.cpp:290)
[5] ImageLoader::load_image(String, Ref<Image>, FileAccess*, bool, float) (/mnt/Miecz/godot3.2/core/io/image_loader.cpp:67 (discriminator 2))
[6] ResourceImporterTexture::import(String const&, String const&, Map<StringName, Variant, Comparator<StringName>, DefaultAllocator> const&, List<String, DefaultAllocator>*, List<String, DefaultAllocator>*, Variant*) (/mnt/Miecz/godot3.2/editor/import/resource_importer_texture.cpp:400 (discriminator 3))
[7] EditorFileSystem::_reimport_file(String const&) (/mnt/Miecz/godot3.2/editor/editor_file_system.cpp:1788)
[8] EditorFileSystem::reimport_files(Vector<String> const&) (/mnt/Miecz/godot3.2/editor/editor_file_system.cpp:1984 (discriminator 3))
[9] EditorFileSystem::_update_scan_actions() (/mnt/Miecz/godot3.2/editor/editor_file_system.cpp:592)
[10] EditorFileSystem::_notification(int) (/mnt/Miecz/godot3.2/editor/editor_file_system.cpp:1164)
[11] EditorFileSystem::_notificationv(int, bool) (/mnt/Miecz/godot3.2/editor/editor_file_system.h:110 (discriminator 14))
[12] Object::notification(int, bool) (/mnt/Miecz/godot3.2/core/object.cpp:931)
[13] SceneTree::_notify_group_pause(StringName const&, int) (/mnt/Miecz/godot3.2/scene/main/scene_tree.cpp:992)
[14] SceneTree::idle(float) (/mnt/Miecz/godot3.2/scene/main/scene_tree.cpp:529 (discriminator 3))
[15] Main::iteration() (/mnt/Miecz/godot3.2/main/main.cpp:2115)
[16] OS_X11::run() (/mnt/Miecz/godot3.2/platform/x11/os_x11.cpp:3628)
[17] godots(main+0x326) [0x172cefc] (/mnt/Miecz/godot3.2/platform/x11/godot_x11.cpp:57)
[18] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7fd8a706e0b3] (??:0)
[19] godots(_start+0x2e) [0x172cb1e] (??:?)

Steps to reproduce:

1. Just open editor

Minimal reproduction project:
ImportFiles.zip