[libc] Remove dependency on `cpp::function` in `rpc.h` (#112422)

Summary:
I'm going to attempt to move the `rpc.h` header to a separate folder
that we can install and include outside of `libc`. Before doing this I'm
going to try to trim up the file so there's not as many things I need to
copy to make it work. This dependency on `cpp::functional` is a low
hanging fruit. I only did it so that I could overload the argument of
the work function so that passing the id was optional in the lambda,
that's not a *huge* deal and it makes it more explicit I suppose.

1 files changed, 6 insertions, 2 deletions

diff --git a/libc/src/stdio/gpu/feof.cpp b/libc/src/stdio/gpu/feof.cpp
index 4a8a173..02adb4c 100644
--- a/libc/src/stdio/gpu/feof.cpp
+++ b/libc/src/stdio/gpu/feof.cpp
@@ -18,8 +18,12 @@ LLVM_LIBC_FUNCTION(int, feof, (::FILE * stream)) {
   int ret;
   rpc::Client::Port port = rpc::client.open<RPC_FEOF>();
   port.send_and_recv(
-      [=](rpc::Buffer *buffer) { buffer->data[0] = file::from_stream(stream); },
-      [&](rpc::Buffer *buffer) { ret = static_cast<int>(buffer->data[0]); });
+      [=](rpc::Buffer *buffer, uint32_t) {
+        buffer->data[0] = file::from_stream(stream);
+      },
+      [&](rpc::Buffer *buffer, uint32_t) {
+        ret = static_cast<int>(buffer->data[0]);
+      });
   port.close();
   return ret;
 }