[LLD] Fix include following 45b8a741fbbf271e0fb71294cb7cdce3ad4b9bf3

lib/Support/CrashRecoveryContext.cpp

@@ -454,6 +454,7 @@ bool CrashRecoveryContext::throwIfCrash(int RetCode) {
   ::RaiseException(RetCode, 0, 0, NULL);
 #else
   // On Unix, signals are represented by return codes of 128 or higher.
+  // Exit code 128 is a reserved value and should not be raised as a signal.
   if (RetCode <= 128)
     return false;
   llvm::sys::unregisterHandlers();

lib/Support/Process.cpp

@@ -20,7 +20,7 @@
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Program.h"
 
-#include <stddef.h> // for _Exit
+#include <stdlib.h> // for _Exit
 
 using namespace llvm;
 using namespace sys;