Avoid possible overflow in OS_Unix readlink
Avoid possible overflow in OS_Unix readlink

Also fix [-Wunused-result]

Zylann/godot,NateWardawg/godot,sanikoyes/godot,Valentactive/godot,honix/godot,Valentactive/godot,DmitriySalnikov/godot,josempans/godot,firefly2442/godot,sanikoyes/godot,NateWardawg/godot,godotengine/godot,Faless/godot,guilhermefelipecgs/godot,vkbsb/godot,guilhermefelipecgs/godot,pkowal1982/godot,ex/godot,pkowal1982/godot,godotengine/godot,firefly2442/godot,Zylann/godot,josempans/godot,Shockblast/godot,godotengine/godot,mcanders/godot,ex/godot,godotengine/godot,josempans/godot,NateWardawg/godot,pkowal1982/godot,akien-mga/godot,MarianoGnu/godot,ex/godot,ZuBsPaCe/godot,pkowal1982/godot,okamstudio/godot,ZuBsPaCe/godot,firefly2442/godot,Zylann/godot,honix/godot,ZuBsPaCe/godot,vkbsb/godot,josempans/godot,MarianoGnu/godot,mcanders/godot,okamstudio/godot,NateWardawg/godot,Faless/godot,honix/godot,Paulloz/godot,firefly2442/godot,akien-mga/godot,Paulloz/godot,BastiaanOlij/godot,ex/godot,okamstudio/godot,Shockblast/godot,groud/godot,honix/godot,Valentactive/godot,okamstudio/godot,pkowal1982/godot,MarianoGnu/godot,vnen/godot,Valentactive/godot,pkowal1982/godot,groud/godot,akien-mga/godot,Faless/godot,Shockblast/godot,sanikoyes/godot,akien-mga/godot,NateWardawg/godot,NateWardawg/godot,Zylann/godot,Faless/godot,godotengine/godot,ZuBsPaCe/godot,okamstudio/godot,guilhermefelipecgs/godot,okamstudio/godot,Paulloz/godot,MarianoGnu/godot,DmitriySalnikov/godot,okamstudio/godot,akien-mga/godot,ZuBsPaCe/godot,ZuBsPaCe/godot,groud/godot,groud/godot,Faless/godot,BastiaanOlij/godot,DmitriySalnikov/godot,Zylann/godot,vnen/godot,honix/godot,vnen/godot,vnen/godot,Zylann/godot,ex/godot,Faless/godot,okamstudio/godot,ex/godot,vnen/godot,akien-mga/godot,akien-mga/godot,BastiaanOlij/godot,vkbsb/godot,akien-mga/godot,josempans/godot,firefly2442/godot,ex/godot,Paulloz/godot,firefly2442/godot,sanikoyes/godot,DmitriySalnikov/godot,ex/godot,BastiaanOlij/godot,vnen/godot,Shockblast/godot,honix/godot,pkowal1982/godot,Shockblast/godot,MarianoGnu/godot,groud/godot,NateWardawg/godot,josempans/godot,Valentactive/godot,vkbsb/godot,Paulloz/godot,josempans/godot,vnen/godot,josempans/godot,mcanders/godot,okamstudio/godot,groud/godot,BastiaanOlij/godot,vnen/godot,guilhermefelipecgs/godot,mcanders/godot,sanikoyes/godot,pkowal1982/godot,guilhermefelipecgs/godot,vkbsb/godot,vkbsb/godot,vkbsb/godot,NateWardawg/godot,ZuBsPaCe/godot,Paulloz/godot,sanikoyes/godot,sanikoyes/godot,sanikoyes/godot,guilhermefelipecgs/godot,Paulloz/godot,guilhermefelipecgs/godot,Shockblast/godot,firefly2442/godot,DmitriySalnikov/godot,MarianoGnu/godot,Zylann/godot,firefly2442/godot,BastiaanOlij/godot,mcanders/godot,ZuBsPaCe/godot,godotengine/godot,BastiaanOlij/godot,okamstudio/godot,MarianoGnu/godot,DmitriySalnikov/godot,guilhermefelipecgs/godot,Shockblast/godot,DmitriySalnikov/godot,Zylann/godot,vkbsb/godot,NateWardawg/godot,Shockblast/godot,Valentactive/godot,mcanders/godot,godotengine/godot,godotengine/godot,BastiaanOlij/godot,Faless/godot,Faless/godot,Valentactive/godot,Valentactive/godot,MarianoGnu/godot