games-board/camato: fix crash on keyboard events

Signed-off-by: Ionen Wolkens <ionen@gentoo.org>

games-board/camato/camato-0.7.4-r2.ebuild

@@ -18,6 +18,10 @@ KEYWORDS="~amd64 ~x86"
 
 ruby_add_rdepend dev-ruby/ruby-gtk2
 
+PATCHES=(
+	"${FILESDIR}"/${P}-implicit-string.patch
+)
+
 all_ruby_prepare() {
 	# this is really single target, but ruby-single is too limited
 	local ruby=$(ruby_get_use_implementations)

games-board/camato/files/camato-0.7.4-implicit-string.patch

@@ -0,0 +1,8 @@
+Crashes on keyboard events otherwise.
+--- a/map.rb
++++ b/map.rb
+@@ -35,3 +35,3 @@
+       if i < 0 or i > 255 then i = 0 end
+-      my_str[0] = i
++      my_str[0] = i.to_s
+       set_resource(my_str)