Revert "[lldb] Use nullptr instead of 0 or NULL (NFC)"

This reverts commit 24d240558811604354a8d6080405f6bad8d15b5c.
Breaks building on Windows:

    ../../lldb/include\lldb/Host/HostNativeThreadBase.h(49,36): error:
        cannot initialize a member subobject of type 'lldb::thread_result_t'
        (aka 'unsigned int') with an rvalue of type 'std::nullptr_t'
      lldb::thread_result_t m_result = nullptr;
                                       ^~~~~~~
    1 error generated.

1 files changed, 5 insertions, 5 deletions

diff --git a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
index 30d7d239834b..e72d55dd2aba 100644
--- a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
+++ b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
@@ -768,9 +768,9 @@ public:
       // Write out the EXC registers
       data.PutHex32(EXCRegSet);
       data.PutHex32(EXCWordCount);
-      PrintRegisterValue(reg_ctx, "far", nullptr, 8, data);
-      PrintRegisterValue(reg_ctx, "esr", nullptr, 4, data);
-      PrintRegisterValue(reg_ctx, "exception", nullptr, 4, data);
+      PrintRegisterValue(reg_ctx, "far", NULL, 8, data);
+      PrintRegisterValue(reg_ctx, "esr", NULL, 4, data);
+      PrintRegisterValue(reg_ctx, "exception", NULL, 4, data);
       return true;
     }
     return false;
@@ -5073,7 +5073,7 @@ void ObjectFileMachO::GetAllArchSpecs(const llvm::MachO::mach_header &header,
   lldb::offset_t offset = lc_offset;
   for (uint32_t i = 0; i < header.ncmds; ++i) {
     const lldb::offset_t cmd_offset = offset;
-    if (data.GetU32(&offset, &load_cmd, 2) == nullptr)
+    if (data.GetU32(&offset, &load_cmd, 2) == NULL)
       break;
 
     llvm::MachO::version_min_command version_min;
@@ -5123,7 +5123,7 @@ void ObjectFileMachO::GetAllArchSpecs(const llvm::MachO::mach_header &header,
   offset = lc_offset;
   for (uint32_t i = 0; i < header.ncmds; ++i) {
     const lldb::offset_t cmd_offset = offset;
-    if (data.GetU32(&offset, &load_cmd, 2) == nullptr)
+    if (data.GetU32(&offset, &load_cmd, 2) == NULL)
       break;
 
     do {