[libc-commits] [libc] [libc] Fix missing default value for errno config (PR #100175)

[Joseph Huber via libc-commits]

================
@@ -1,7 +1,7 @@
 {
   "errno": {
     "LIBC_CONF_ERRNO_MODE": {
-      "value": "",
+      "value": "LIBC_ERRNO_MODE_DEFAULT",
       "doc": "The implementation used for errno, acceptable values are LIBC_ERRNO_MODE_UNDEFINED, LIBC_ERRNO_MODE_THREAD_LOCAL, LIBC_ERRNO_MODE_SHARED, LIBC_ERRNO_MODE_EXTERNAL, and LIBC_ERRNO_MODE_SYSTEM."
----------------
jhuber6 wrote:

```suggestion
      "doc": "The implementation used for errno, acceptable values are LIBC_ERRNO_DEFAULT, LIBC_ERRNO_MODE_UNDEFINED, LIBC_ERRNO_MODE_THREAD_LOCAL, LIBC_ERRNO_MODE_SHARED, LIBC_ERRNO_MODE_EXTERNAL, and LIBC_ERRNO_MODE_SYSTEM."
```

https://github.com/llvm/llvm-project/pull/100175