games-misc/sex: fix implicit function decls

Closes: https://bugs.gentoo.org/871414
Signed-off-by: Sam James <sam@gentoo.org>

games-misc/sex/files/sex-1.0-Add-missing-string.h-for-strcmp.patch

@@ -0,0 +1,15 @@
+From: Sam James <sam@gentoo.org>
+Date: Tue, 27 Sep 2022 22:50:12 +0100
+Subject: [PATCH] Add missing <string.h> for strcmp
+
+Bug: https://bugs.gentoo.org/871414
+--- a/sex.c
++++ b/sex.c
+@@ -10,6 +10,7 @@
+ 
+ #include <stdio.h>
+ #include <stdlib.h>
++#include <string.h>
+ #include <time.h>
+ #include <ctype.h>
+ 

games-misc/sex/sex-1.0-r3.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -15,9 +15,14 @@ KEYWORDS="~alpha ~amd64 ~ppc64 ~x86 ~amd64-linux ~x86-linux ~ppc-macos"
 
 RDEPEND="!sci-astronomy/sextractor"
 
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.0-Add-missing-string.h-for-strcmp.patch
+)
+
 src_prepare() {
 	default
-	rm -f Makefile
+
+	rm -f Makefile || die
 }
 
 src_compile() {