firefox: update to 87.0.

doesn't build on musl yet, see:
rust-minidump/minidump-writer#4

probably won't build on ppc either, see:
https://github.com/msirringhaus/minidump_writer_linux/tree/main/src/thread_info

srcpkgs/firefox/patches/musl-minidump.patch

@@ -0,0 +1,51 @@
+diff --git third_party/rust/libc/src/unix/linux_like/linux/musl/mod.rs third_party/rust/libc/src/unix/linux_like/linux/musl/mod.rs
+index 0d427ae3..12e71446 100644
+--- third_party/rust/libc/src/unix/linux_like/linux/musl/mod.rs
++++ third_party/rust/libc/src/unix/linux_like/linux/musl/mod.rs
+@@ -532,6 +532,33 @@ pub const PRIO_PROCESS: ::c_int = 0;
+ pub const PRIO_PGRP: ::c_int = 1;
+ pub const PRIO_USER: ::c_int = 2;
+
++// sys/auxv.h
++pub const AT_NULL: ::c_ulong = 0;
++pub const AT_IGNORE: ::c_ulong = 1;
++pub const AT_EXECFD: ::c_ulong = 2;
++pub const AT_PHDR: ::c_ulong = 3;
++pub const AT_PHENT: ::c_ulong = 4;
++pub const AT_PHNUM: ::c_ulong = 5;
++pub const AT_PAGESZ: ::c_ulong = 6;
++pub const AT_BASE: ::c_ulong = 7;
++pub const AT_FLAGS: ::c_ulong = 8;
++pub const AT_ENTRY: ::c_ulong = 9;
++pub const AT_NOTELF: ::c_ulong = 10;
++pub const AT_UID: ::c_ulong = 11;
++pub const AT_EUID: ::c_ulong = 12;
++pub const AT_GID: ::c_ulong = 13;
++pub const AT_EGID: ::c_ulong = 14;
++pub const AT_PLATFORM: ::c_ulong = 15;
++pub const AT_HWCAP: ::c_ulong = 16;
++pub const AT_CLKTCK: ::c_ulong = 17;
++// AT_* values 18 through 22 are reserved
++pub const AT_SECURE: ::c_ulong = 23;
++pub const AT_BASE_PLATFORM: ::c_ulong = 24;
++pub const AT_RANDOM: ::c_ulong = 25;
++pub const AT_HWCAP2: ::c_ulong = 26;
++
++pub const AT_EXECFN: ::c_ulong = 31;
++
+ extern "C" {
+     pub fn sendmmsg(
+         sockfd: ::c_int,
+diff --git third_party/rust/minidump_writer_linux/src/linux_ptrace_dumper.rs third_party/rust/minidump_writer_linux/src/linux_ptrace_dumper.rs
+index 0e34a6dd..5763eb7e 100644
+--- third_party/rust/minidump_writer_linux/src/linux_ptrace_dumper.rs
++++ third_party/rust/minidump_writer_linux/src/linux_ptrace_dumper.rs
+@@ -108,7 +108,7 @@ impl LinuxPtraceDumper {
+                 Err(_) => continue,
+             }
+         }
+-        #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
++        #[cfg(all(target_os = "linux", any(target_arch = "x86_64", target_arch = "x86"), target_env = "gnu"))]
+         {
+             // On x86, the stack pointer is NULL or -1, when executing trusted code in
+             // the seccomp sandbox. Not only does this cause difficulties down the line

srcpkgs/firefox/template

@@ -3,15 +3,15 @@
 # THIS PKG MUST BE SYNCHRONIZED WITH "srcpkgs/firefox-i18n".
 #
 pkgname=firefox
-version=86.0.1
+version=87.0
 revision=1
 build_helper="rust"
 short_desc="Mozilla Firefox web browser"
 maintainer="Johannes <johannes.brechtmann@gmail.com>"
 license="MPL-2.0, GPL-2.0-or-later, LGPL-2.1-or-later"
 homepage="https://www.mozilla.org/firefox/"
 distfiles="${MOZILLA_SITE}/${pkgname}/releases/${version}/source/${pkgname}-${version}.source.tar.xz"
-checksum=74f99c226ae6747f0170566f4f88be410866b0120214d2a593566cd1fff3d3df
+checksum=ce98be0522f971b6950f22c738c4b2caf19cf7f48ab2ae2e6d46694af7fd58ab
 
 lib32disabled=yes
 
@@ -65,6 +65,8 @@ post_extract() {
 
 post_patch() {
 	_clear_vendor_checksums num-traits
+	_clear_vendor_checksums libc
+	_clear_vendor_checksums minidump_writer_linux
 }
 
 do_build() {