Merge commit '74ddc0af367e' from apple/master into swift/master-next

git apple-llvm automerger · git apple-llvm automerger · commit 862fe5380383 · 2019-10-30T14:27:55.000+01:00
diff --git a/lldb/tools/lldb-vscode/VSCode.cpp b/lldb/tools/lldb-vscode/VSCode.cpp
@@ -47,6 +47,7 @@ VSCode::VSCode()
   int result = _setmode(fileno(stdout), _O_BINARY);
   assert(result);
   result = _setmode(fileno(stdin), _O_BINARY);
+  (void)result;
   assert(result);
 #endif
   if (log_file_path)
