[sanitizer] fix the deadlock detector build

llvm-svn: 204044
diff --git a/compiler-rt/lib/tsan/dd/dd_rtl.cc b/compiler-rt/lib/tsan/dd/dd_rtl.cc
index 329d59d..aed9deb 100644
--- a/compiler-rt/lib/tsan/dd/dd_rtl.cc
+++ b/compiler-rt/lib/tsan/dd/dd_rtl.cc
@@ -44,7 +44,7 @@
   for (int i = 0; i < rep->n; i++) {
     Printf("Thread %d locks mutex %llu while holding mutex %llu:\n",
       rep->loop[i].thr_ctx, rep->loop[i].mtx_ctx1, rep->loop[i].mtx_ctx0);
-    PrintStackTrace(thr, rep->loop[i].stk);
+    PrintStackTrace(thr, rep->loop[i].stk[1]);
   }
   Printf("==============================\n");
 }