scanmem: fix build with gettext 0.25 (#425712)

pkgs/by-name/sc/scanmem/gettext-0.25.patch

@@ -0,0 +1,14 @@
+diff --git a/configure.ac b/configure.ac
+index f6ee0b9..378a3c9 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -111,6 +111,9 @@ AS_IF([test "x$with_readline" != "xno"], [
+   ])
+ ])
+ 
++AM_GNU_GETTEXT_VERSION([0.25])
++AM_GNU_GETTEXT([external])
++
+ GETTEXT_PACKAGE=GameConqueror
+ AC_SUBST(GETTEXT_PACKAGE)
+ AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE], ["$GETTEXT_PACKAGE"],

pkgs/by-name/sc/scanmem/package.nix

@@ -22,6 +22,10 @@ stdenv.mkDerivation rec {
     sha256 = "17p8sh0rj8yqz36ria5bp48c8523zzw3y9g8sbm2jwq7sc27i7s9";
   };
 
+  patches = [
+    ./gettext-0.25.patch
+  ];
+
   nativeBuildInputs = [
     autoreconfHook
     gobject-introspection