php: missing dependency on nghttp2

dev-lang/php/php-5.6.37.recipe

@@ -6,7 +6,7 @@ popular websites in the world."
 HOMEPAGE="https://php.net/"
 COPYRIGHT="2001-2018 PHP Group"
 LICENSE="PHP License v3.01"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://php.net/get/php-$portVersion.tar.bz2/from/this/mirror"
 CHECKSUM_SHA256="886ad63d05d94ea3e54322691aadea0cf1d4bcdb4450b02fe300e5b570788b23"
 SOURCE_FILENAME="php-$portVersion.tar.bz2"
@@ -38,6 +38,7 @@ REQUIRES="
 	lib:libfreetype
 	lib:libicuuc
 	lib:libjpeg
+	lib:libnghttp2
 	lib:libpcre
 	lib:libpng16
 	lib:libssl
@@ -52,6 +53,7 @@ BUILD_REQUIRES="
 	devel:libfreetype
 	devel:libicuuc
 	devel:libjpeg
+	devel:libnghttp2
 	devel:libpcre
 	devel:libpng16
 	devel:libssl