Add default size workaround for fluxbox

Signed-off-by: falkTX <falktx@falktx.com>

dpf

@@ -1 +1 @@
-Subproject commit b9e027eeae8741ece01f80c5d5d1625b58a64eea
+Subproject commit 6876fd08ec9f0d1926158a4b60ed68ce9d33c6d4

src/Makefile.cardinal.mk

@@ -246,11 +246,13 @@ ifneq ($(HEADLESS),true)
 FILES_UI  = CardinalUI.cpp
 FILES_UI += CardinalCommon-UI.cpp
 FILES_UI += CardinalRemote.cpp
-FILES_UI += CardinalX11WindowIcon.cpp
 FILES_UI += common.cpp
 FILES_UI += glfw.cpp
 FILES_UI += MenuBar.cpp
 FILES_UI += Window.cpp
+ifneq ($(HAIKU_OR_MACOS_OR_WASM_OR_WINDOWS),true)
+FILES_UI += CardinalX11WindowIcon.cpp
+endif
 EXTRA_UI_DEPENDENCIES = $(subst -headless,,$(EXTRA_DSP_DEPENDENCIES))
 EXTRA_UI_LIBS += $(subst -headless,,$(EXTRA_DSP_LIBS))
 endif