[master] 3cf3e0eaf varnishhist: ignore curs_set() errors

[Nils Goroll]

commit 3cf3e0eafef7d5c3c18892e4e02f543d015d59bc
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Fri Feb 7 20:30:33 2025 +0100

    varnishhist: ignore curs_set() errors
    
    Don't abort if the terminal does not support invisible cursors.
    
    Fixes #3757

diff --git a/bin/varnishhist/varnishhist.c b/bin/varnishhist/varnishhist.c
index 03251fce4..2e7e7cea3 100644
--- a/bin/varnishhist/varnishhist.c
+++ b/bin/varnishhist/varnishhist.c
@@ -58,8 +58,10 @@
 
 #if 1
 #define AC(x) assert((x) != ERR)
+#define IC(x) (void)x
 #else
-#define AC(x) x
+#define AC(x) (void)x
+#define IC(x) (void)x
 #endif
 
 #define HIST_N 2000		/* how far back we remember */
@@ -380,7 +382,7 @@ do_curses(void *arg)
 	AC(noecho());
 	AC(nonl());
 	AC(intrflush(stdscr, FALSE));
-	AC(curs_set(0));
+	IC(curs_set(0));
 	AC(erase());
 	while (!VSIG_int && !VSIG_term && !VSIG_hup) {