Fix thread start with no user data when target has no default argument
Fix thread start with no user data when target has no default argument

sanikoyes/godot,Valentactive/godot,Shockblast/godot,firefly2442/godot,Valentactive/godot,honix/godot,guilhermefelipecgs/godot,Zylann/godot,godotengine/godot,vkbsb/godot,pkowal1982/godot,josempans/godot,godotengine/godot,Shockblast/godot,guilhermefelipecgs/godot,DmitriySalnikov/godot,sanikoyes/godot,Zylann/godot,firefly2442/godot,Valentactive/godot,Shockblast/godot,pkowal1982/godot,Faless/godot,BastiaanOlij/godot,godotengine/godot,Faless/godot,vkbsb/godot,sanikoyes/godot,BastiaanOlij/godot,akien-mga/godot,vkbsb/godot,guilhermefelipecgs/godot,guilhermefelipecgs/godot,honix/godot,Faless/godot,godotengine/godot,Zylann/godot,josempans/godot,Zylann/godot,BastiaanOlij/godot,BastiaanOlij/godot,DmitriySalnikov/godot,akien-mga/godot,Valentactive/godot,josempans/godot,firefly2442/godot,josempans/godot,guilhermefelipecgs/godot,BastiaanOlij/godot,guilhermefelipecgs/godot,vkbsb/godot,ZuBsPaCe/godot,josempans/godot,pkowal1982/godot,pkowal1982/godot,akien-mga/godot,Shockblast/godot,Shockblast/godot,Faless/godot,ZuBsPaCe/godot,akien-mga/godot,Valentactive/godot,DmitriySalnikov/godot,ZuBsPaCe/godot,pkowal1982/godot,vnen/godot,Zylann/godot,sanikoyes/godot,vkbsb/godot,firefly2442/godot,akien-mga/godot,honix/godot,akien-mga/godot,ZuBsPaCe/godot,godotengine/godot,sanikoyes/godot,Zylann/godot,Shockblast/godot,firefly2442/godot,BastiaanOlij/godot,vnen/godot,ZuBsPaCe/godot,firefly2442/godot,ZuBsPaCe/godot,vnen/godot,vnen/godot,DmitriySalnikov/godot,ZuBsPaCe/godot,Valentactive/godot,sanikoyes/godot,sanikoyes/godot,DmitriySalnikov/godot,Zylann/godot,vkbsb/godot,firefly2442/godot,sanikoyes/godot,Valentactive/godot,pkowal1982/godot,Valentactive/godot,josempans/godot,ZuBsPaCe/godot,vnen/godot,Faless/godot,DmitriySalnikov/godot,Faless/godot,Faless/godot,josempans/godot,godotengine/godot,guilhermefelipecgs/godot,Zylann/godot,akien-mga/godot,Shockblast/godot,Faless/godot,godotengine/godot,vkbsb/godot,guilhermefelipecgs/godot,pkowal1982/godot,vnen/godot,vnen/godot,godotengine/godot,pkowal1982/godot,honix/godot,firefly2442/godot,vnen/godot,BastiaanOlij/godot,honix/godot,honix/godot,Shockblast/godot,BastiaanOlij/godot,josempans/godot,akien-mga/godot,vkbsb/godot,DmitriySalnikov/godot