Merge pull request 'Fix TGA file writing on Windows' (#1985) from fix-tga-file-writing-on-windows into master

Reviewed-on: https://git.minetest.land/MineClone2/MineClone2/pulls/1985
Reviewed-by: AFCMS <afcms@noreply.git.minetest.land>

mods/CORE/tga_encoder/init.lua

@@ -84,7 +84,7 @@ function image:encode()
 end
 
 function image:save(filename)
-	local f = assert(io.open(filename, "w"))
+	local f = assert(io.open(filename, "wb"))
 	f:write(self.data)
 	f:close()
 end