gscreen: Fix broken configs - Silverdragon++ #10740

Job	Run time
htmldocs	28m 25s
package-indep (debian:buster)	49m 24s
package-arch (debian:buster)	22m 28s
package-indep (debian:bullseye)	48m 55s
package-arch (debian:bullseye)	22m 41s
rip-and-test	18m 53s
rip-and-test-clang	18m 59s
package-indep (debian:bookworm)	43m 50s
package-arch (debian:bookworm)	23m 58s
package-arch (debian:sid)	24m 31s
package-indep (debian:sid)	45m 32s
	5h 47m 36s

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