Ignore SC2242 because exit -1 is extremely common and well known.

postmodern · postmodern · commit d4514fb274f5 · 2023-02-20T14:14:21.000-08:00
diff --git a/Makefile b/Makefile
@@ -53,6 +53,7 @@ check:
 		   --exclude SC2154 \
 		   --exclude SC1090 \
 		   --exclude SC1091 \
+		   --exclude SC2242 \
 		   share/$(NAME)/*.sh bin/*
 
 lint:
