[HostNativeThreadBase] Undo nullptr changes

The thread result type is an unsigned instead of a pointer on windows,
so we shouldn't replace 0 with nullptr here.

llvm-svn: 361528
GitOrigin-RevId: a21d5ab369ead9b9517b13aa8de3606bc641bfa5

source/Host/common/HostNativeThreadBase.cpp

diff --git a/source/Host/common/HostNativeThreadBase.cpp b/source/Host/common/HostNativeThreadBase.cpp
index 82f519e..a5f876a 100644
--- a/source/Host/common/HostNativeThreadBase.cpp
+++ b/source/Host/common/HostNativeThreadBase.cpp
@@ -18,10 +18,10 @@
 using namespace lldb_private;
 
 HostNativeThreadBase::HostNativeThreadBase()
-    : m_thread(LLDB_INVALID_HOST_THREAD), m_result(nullptr) {}
+    : m_thread(LLDB_INVALID_HOST_THREAD), m_result(0) {}
 
 HostNativeThreadBase::HostNativeThreadBase(thread_t thread)
-    : m_thread(thread), m_result(nullptr) {}
+    : m_thread(thread), m_result(0) {}
 
 lldb::thread_t HostNativeThreadBase::GetSystemHandle() const {
   return m_thread;
@@ -37,7 +37,7 @@
 
 void HostNativeThreadBase::Reset() {
   m_thread = LLDB_INVALID_HOST_THREAD;
-  m_result = nullptr;
+  m_result = 0;
 }
 
 bool HostNativeThreadBase::EqualsThread(lldb::thread_t thread) const {
@@ -47,7 +47,7 @@
 lldb::thread_t HostNativeThreadBase::Release() {
   lldb::thread_t result = m_thread;
   m_thread = LLDB_INVALID_HOST_THREAD;
-  m_result = nullptr;
+  m_result = 0;
 
   return result;
 }