texinfo requires ncurses

The haiku system package did provide ncurses implicitly before, so
that was never noticed.

sys-apps/texinfo/texinfo-4.13a.recipe

@@ -3,7 +3,7 @@ DESCRIPTION="Texinfo is the official documentation format of the GNU project."
 HOMEPAGE="http://www.gnu.org/software/texinfo/" 
 SRC_URI="http://ftp.gnu.org/gnu/texinfo/texinfo-4.13a.tar.gz"
 CHECKSUM_MD5="71ba711519209b5fb583fed2b3d86fcb"
-REVISION="4"
+REVISION="5"
 ARCHITECTURES="x86_gcc2 ?x86"
 
 PROVIDES="texinfo = $portVersion compat >= 4.13
@@ -15,8 +15,12 @@ PROVIDES="texinfo = $portVersion compat >= 4.13
 	cmd:texindex = $portVersion compat >= 4.13
 	cmd:infokey = $portVersion compat >= 4.13
 	cmd:pdftexi2dvi = $portVersion compat >= 4.13"
-REQUIRES=""
-BUILD_REQUIRES=""
+REQUIRES="
+	ncurses
+	"
+BUILD_REQUIRES="
+	$REQUIRES
+	"
 BUILD_PREREQUIRES="haiku_devel >= $haikuVersion
 	cmd:gcc
 	cmd:ld