[lsan] Set current_thread_tid correctly for main thread.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184189 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/lsan/lsan.cc b/lib/lsan/lsan.cc
index 9b83b41..c917bcc 100644
--- a/lib/lsan/lsan.cc
+++ b/lib/lsan/lsan.cc
@@ -48,6 +48,7 @@
   u32 tid = ThreadCreate(0, 0, true);
   CHECK_EQ(tid, 0);
   ThreadStart(tid, GetTid());
+  SetCurrentThread(tid);
 
   // Start symbolizer process if necessary.
   const char* external_symbolizer = common_flags()->external_symbolizer_path;