[lldb-dap] Silence Wunused-result warning

[keith]

No description provided.

[keith]

showed up since adb9ef0

[keith]

lldb/tools/lldb-dap/OutputRedirector.cpp:89:5: error: ignoring return value of function declared with 'warn_unused_result' attribute [-Werror,-Wunused-result]
   89 |     ::write(fd, buf, sizeof(buf));
      |     ^~~~~~~ ~~~~~~~~~~~~~~~~~~~~
1 error generated.

[llvmbot]

@llvm/pr-subscribers-lldb

Author: Keith Smiley (keith)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/126580.diff

1 Files Affected:

• (modified) lldb/tools/lldb-dap/OutputRedirector.cpp (+1-1)

diff --git a/lldb/tools/lldb-dap/OutputRedirector.cpp b/lldb/tools/lldb-dap/OutputRedirector.cpp
index 7935e17a653bec3..a23572ab7ae0425 100644
--- a/lldb/tools/lldb-dap/OutputRedirector.cpp
+++ b/lldb/tools/lldb-dap/OutputRedirector.cpp
@@ -86,7 +86,7 @@ void OutputRedirector::Stop() {
     // write descriptor is duplicated (to stdout/err or to another process).
     // Write a null byte to ensure the read call returns.
     char buf[] = "\0";
-    ::write(fd, buf, sizeof(buf));
+    (void)::write(fd, buf, sizeof(buf));
     ::close(fd);
     m_forwarder.join();
   }