Remove more lint, mostly C-style casts.

Change-Id: Iaf1f23290e35ed48e5795fb20690953a9a834457
diff --git a/src/thread.cc b/src/thread.cc
index 74165da..1b5dea0 100644
--- a/src/thread.cc
+++ b/src/thread.cc
@@ -513,7 +513,7 @@
 
   // Sanity check.
   int stack_variable;
-  CHECK_GT(&stack_variable, (void*) stack_end_);
+  CHECK_GT(&stack_variable, reinterpret_cast<void*>(stack_end_));
 
   CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attributes), __FUNCTION__);
 #endif