Comment out fatal-warnings for Mac clang14

Author: martin4861

cc/toolchains/llvm/unix_cc_toolchain_config.bzl

@@ -1290,7 +1290,9 @@ def _impl(ctx):
             ),
             flag_set(
                 actions = all_link_actions,
-                flag_groups = [flag_group(flags = ["-Wl,-fatal-warnings"])],
+                flag_groups = [flag_group(
+                    flags = ["-Wl,-fatal-warnings"] if is_linux else [""], # fails on Mac & clang14: ["-Wl,-fatal_warnings"],
+                )],
             ),
         ],
     )