[lldb] Fix Windows build after 6b51e26d39fa (#170917)

diff --git a/lldb/source/Host/windows/ProcessLauncherWindows.cpp b/lldb/source/Host/windows/ProcessLauncherWindows.cpp
index ac5383f..e983c52 100644
--- a/lldb/source/Host/windows/ProcessLauncherWindows.cpp
+++ b/lldb/source/Host/windows/ProcessLauncherWindows.cpp
@@ -241,7 +241,6 @@
   secattr.nLength = sizeof(SECURITY_ATTRIBUTES);
   secattr.bInheritHandle = TRUE;
 
-  llvm::StringRef path = action->GetPath();
   DWORD access = 0;
   DWORD share = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE;
   DWORD create = 0;
@@ -258,6 +257,7 @@
       flags = FILE_FLAG_WRITE_THROUGH;
   }
 
+  const std::string path = action->GetFileSpec().GetPath();
   std::wstring wpath;
   llvm::ConvertUTF8toWide(path, wpath);
   HANDLE result = ::CreateFileW(wpath.c_str(), access, share, &secattr, create,