golang: Update to 1.17.5, add patch

Includes fixes for:
* CVE-2021-44716: unbounded growth of HTTP/2 header canonicalization
  cache
* CVE-2021-44717: syscall.ForkExec error can close file descriptor 0

Added patches:
* 001-cmd-link-use-gold-on-ARM-ARM64-only-if-gold-is-available.patch:
  https://github.com/golang/go/pull/49748 backported for Go 1.17,
  this removes the requirement for the gold linker when building Go
  programs that use Go plugins on arm/arm64

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

lang/golang/golang/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 GO_VERSION_MAJOR_MINOR:=1.17
-GO_VERSION_PATCH:=3
+GO_VERSION_PATCH:=5
 
 PKG_NAME:=golang
 PKG_VERSION:=$(GO_VERSION_MAJOR_MINOR)$(if $(GO_VERSION_PATCH),.$(GO_VERSION_PATCH))
@@ -20,7 +20,7 @@ GO_SOURCE_URLS:=https://dl.google.com/go/ \
 
 PKG_SOURCE:=go$(PKG_VERSION).src.tar.gz
 PKG_SOURCE_URL:=$(GO_SOURCE_URLS)
-PKG_HASH:=705c64251e5b25d5d55ede1039c6aa22bea40a7a931d14c370339853643c3df0
+PKG_HASH:=3defb9a09bed042403195e872dcbc8c6fae1485963332279668ec52e80a95a2d
 
 PKG_MAINTAINER:=Jeffery To <jeffery.to@gmail.com>
 PKG_LICENSE:=BSD-3-Clause

lang/golang/golang/patches/001-cmd-link-use-gold-on-ARM-ARM64-only-if-gold-is-available.patch

@@ -0,0 +1,35 @@
+This is https://github.com/golang/go/pull/49748 backported for Go 1.17.
+
+--- a/src/cmd/link/internal/ld/lib.go
++++ b/src/cmd/link/internal/ld/lib.go
+@@ -1388,23 +1388,18 @@ func (ctxt *Link) hostlink() {
+ 		}
+ 
+ 		if ctxt.Arch.InFamily(sys.ARM, sys.ARM64) && buildcfg.GOOS == "linux" {
+-			// On ARM, the GNU linker will generate COPY relocations
+-			// even with -znocopyreloc set.
++			// On ARM, older versions of the GNU linker will generate
++			// COPY relocations even with -znocopyreloc set.
+ 			// https://sourceware.org/bugzilla/show_bug.cgi?id=19962
+ 			//
+-			// On ARM64, the GNU linker will fail instead of
+-			// generating COPY relocations.
++			// On ARM64, older versions of the GNU linker will fail
++			// instead of generating COPY relocations.
+ 			//
+-			// In both cases, switch to gold.
+-			altLinker = "gold"
+-
+-			// If gold is not installed, gcc will silently switch
+-			// back to ld.bfd. So we parse the version information
+-			// and provide a useful error if gold is missing.
++			// In both cases, switch to gold if gold is available.
+ 			cmd := exec.Command(*flagExtld, "-fuse-ld=gold", "-Wl,--version")
+ 			if out, err := cmd.CombinedOutput(); err == nil {
+-				if !bytes.Contains(out, []byte("GNU gold")) {
+-					log.Fatalf("ARM external linker must be gold (issue #15696), but is not: %s", out)
++				if bytes.Contains(out, []byte("GNU gold")) {
++					altLinker = "gold"
+ 				}
+ 			}
+ 		}