Adding thread handle to logging.

src/xenia/base/string_buffer.cc

@@ -16,12 +16,15 @@
 
 namespace xe {
 
-StringBuffer::StringBuffer(size_t initial_capacity) : buffer_offset_(0) {
+StringBuffer::StringBuffer(size_t initial_capacity) {
   buffer_capacity_ = std::max(initial_capacity, static_cast<size_t>(16 * 1024));
   buffer_ = reinterpret_cast<char*>(malloc(buffer_capacity_));
 }
 
-StringBuffer::~StringBuffer() { free(buffer_); }
+StringBuffer::~StringBuffer() {
+  free(buffer_);
+  buffer_ = nullptr;
+}
 
 void StringBuffer::Reset() { buffer_offset_ = 0; }