Fixes AssetLib crash when JPG module is disabled
Fixes AssetLib crash when JPG module is disabled

JPG module is optional, so check it's existence before using.

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