Fix upb build with Clang 16

MODULE.bazel

@@ -80,6 +80,7 @@ single_version_override(
  patch_strip = 1,
  patches = [
  "//third_party/upb:00_remove_toolchain_transition.patch",
+ "//third_party/upb:01_remove_werror.patch",
  ],
 )
 

third_party/upb/01_remove_werror.patch

@@ -0,0 +1,19 @@
+diff --git a/bazel/upb_proto_library.bzl b/bazel/upb_proto_library.bzl
+--- a/bazel/build_defs.bzl
++++ b/bazel/build_defs.bzl
+@@ -34,13 +34,13 @@
+ _DEFAULT_CPPOPTS.extend([
+ "-Wextra",
+ # "-Wshorten-64-to-32", # not in GCC (and my Kokoro images doesn't have Clang)
+- "-Werror",
++ # "-Werror",
+ "-Wno-long-long",
+ ])
+ _DEFAULT_COPTS.extend([
+ "-std=c99",
+ "-pedantic",
+- "-Werror=pedantic",
++ # "-Werror=pedantic",
+ "-Wall",
+ "-Wstrict-prototypes",
+ # GCC (at least) emits spurious warnings for this that cannot be fixed

third_party/upb/BUILD

@@ -8,4 +8,5 @@ filegroup(
 
 exports_files([
  "00_remove_toolchain_transition.patch",
+ "01_remove_werror.patch",
 ])