[lldb] Replace std::call_once() with llvm::call_once()

Remove the single instance of std::call_once() in lldbTarget library
with llvm::call_once().  The former fails to build on NetBSD when
combined with llvm::once_flag (which replaced std::once_flag
in r369618), and combining the two is probably generally incorrect
anyway.

llvm-svn: 370748

1 files changed, 2 insertions, 2 deletions

diff --git a/lldb/source/Target/Process.cpp b/lldb/source/Target/Process.cpp
index e3875503989..95b84b33002 100644
--- a/lldb/source/Target/Process.cpp
+++ b/lldb/source/Target/Process.cpp
@@ -5965,7 +5965,7 @@ UtilityFunction *Process::GetLoadImageUtilityFunction(
     llvm::function_ref<std::unique_ptr<UtilityFunction>()> factory) {
   if (platform != GetTarget().GetPlatform().get())
     return nullptr;
-  std::call_once(m_dlopen_utility_func_flag_once,
-                 [&] { m_dlopen_utility_func_up = factory(); });
+  llvm::call_once(m_dlopen_utility_func_flag_once,
+                  [&] { m_dlopen_utility_func_up = factory(); });
   return m_dlopen_utility_func_up.get();
 }