[XRay][tools] Fixup for pedantic and permissive errors/warnings

Remove extraneous semicolons and fully qualify the Trace type.

Follow-up to D29320.

llvm-svn: 301161
diff --git a/llvm/tools/llvm-xray/xray-graph.h b/llvm/tools/llvm-xray/xray-graph.h
index 81c2e0e..3636287 100644
--- a/llvm/tools/llvm-xray/xray-graph.h
+++ b/llvm/tools/llvm-xray/xray-graph.h
@@ -149,7 +149,7 @@
     bool KeepGoing;
     bool DeduceSiblingCalls;
     std::string InstrMap;
-    Trace Trace;
+    ::llvm::xray::Trace Trace;
     Expected<GraphRenderer> getGraphRenderer();
   };