tsan: better error message wording in deadlock reports

llvm-svn: 203109
diff --git a/compiler-rt/lib/tsan/dd/dd_rtl.cc b/compiler-rt/lib/tsan/dd/dd_rtl.cc
index 840a25a..329d59d 100644
--- a/compiler-rt/lib/tsan/dd/dd_rtl.cc
+++ b/compiler-rt/lib/tsan/dd/dd_rtl.cc
@@ -42,7 +42,7 @@
   Printf("==============================\n");
   Printf("WARNING: lock-order-inversion (potential deadlock)\n");
   for (int i = 0; i < rep->n; i++) {
-    Printf("Thread %d locks mutex %llu under mutex %llu:\n",
+    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);
   }