fixing missing RefCounter class

git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@135012 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Utility/RefCounter.cpp b/source/Utility/RefCounter.cpp
new file mode 100644
index 0000000..c3acedd
--- /dev/null
+++ b/source/Utility/RefCounter.cpp
@@ -0,0 +1,25 @@
+//===---------------------RefCounter.cpp ------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Utility/RefCounter.h"
+
+namespace lldb_utility {
+
+RefCounter::RefCounter(RefCounter::value_type* ctr):
+m_counter(ctr)
+{
+    increment(m_counter);
+}
+
+RefCounter::~RefCounter()
+{
+    decrement(m_counter);
+}
+
+} // namespace lldb_utility