Remove more lint.

Change-Id: I48714db4169d9ea0536342809361210910ee2091
diff --git a/src/jdwp/jdwp.h b/src/jdwp/jdwp.h
index ad3d077..7bbc54f 100644
--- a/src/jdwp/jdwp.h
+++ b/src/jdwp/jdwp.h
@@ -259,7 +259,7 @@
   void UnregisterAll();
 
  private:
-  JdwpState(const JdwpOptions* options);
+  explicit JdwpState(const JdwpOptions* options);
   bool InvokeInProgress();
   bool IsConnected();
   void SuspendByPolicy(JdwpSuspendPolicy suspendPolicy);