Specify format string literals for all printw() calls

Closes: #995597

debian/changelog

@@ -1,3 +1,11 @@
+bsdgames (2.17-29) unstable; urgency=medium
+
+  * Team upload.
+  * Specify format string literals for all printw() calls.
+    Closes: #995597.
+
+ -- Stephen Kitt <skitt@debian.org>  Mon, 11 Oct 2021 14:23:15 +0200
+
 bsdgames (2.17-28) unstable; urgency=medium
 
   * hack: Fix segv when 'i' (inventory) done after load from saved game.

debian/patches/0018-Add-missing-format-strings.patch

@@ -0,0 +1,24 @@
+From: Stephen Kitt <skitt@debian.org>
+Date: Mon, 11 Oct 2021 14:30:00 +0200
+Subject: Add missing format strings
+
+--- a/canfield/canfield/canfield.c
++++ b/canfield/canfield/canfield.c
+@@ -1647,7 +1647,7 @@
+ 		return;
+ 	clear();
+ 	for (cp = basicinstructions; *cp != 0; cp++)
+-		printw(*cp);
++		printw("%s", *cp);
+ 	refresh();
+ 	getch();
+ 	clear();
+@@ -1660,7 +1660,7 @@
+ 		return;
+ 	clear();
+ 	for (cp = bettinginstructions; *cp != 0; cp++)
+-		printw(*cp);
++		printw("%s", *cp);
+ 	refresh();
+ 	getch();
+ }

debian/patches/series

@@ -15,3 +15,4 @@
 0015-primes-Update-to-NetBSD-CVS-2018-02-03.patch
 0016-Better-explanation-how-to-read-the-documentation.patch
 0017-hack-Fix-segv-when-i-inventory-done-after-load-from-.patch
+0018-Add-missing-format-strings.patch