build: don't use -latomic on macOS

Fixes build when using open-source clang. Builds using Apple clang from Xcode v7 and later were already working, due to the fact that node's build system misidentifies their llvm_version as "0.0" and thus the flag wasn't being added. PR-URL: #30099Fixes: #30093 Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]>

Author: ryandesign

node.gyp

@@ -292,7 +292,7 @@
 '-Wl,-bnoerrmsg',
  ],
  }],
- ['OS in ("linux", "mac") and llvm_version != "0.0"',{
+ ['OS == "linux" and llvm_version != "0.0"',{
 'libraries': ['-latomic'],
  }],
  ],