GridMapEditorPlgn: fix a leak
GridMapEditorPlgn: fix a leak

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