Fix presubmit errors after r8152

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8153 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/platform-linux.cc

@@ -992,9 +992,9 @@ class SignalSender : public Thread {
     if (signal_handler_installed_) {
       sigaction(SIGPROF, &old_signal_handler_, 0);
       signal_handler_installed_ = false;
-    }    
+    }
   }
-  
+
   static void AddActiveSampler(Sampler* sampler) {
     ScopedLock lock(mutex_);
     SamplerRegistry::AddActiveSampler(sampler);