fix trailing whitespaces
diff --git a/src/ccnx-closure.cpp b/src/ccnx-closure.cpp
index 43b0d65..5b24f66 100644
--- a/src/ccnx-closure.cpp
+++ b/src/ccnx-closure.cpp
@@ -6,7 +6,7 @@
               : m_retry(retry), m_timeoutCallback(NULL)
 {
   m_timeoutCallback = new TimeoutCallback (timeoutCallback);
-  m_dataCallback = new DataCallback (dataCallback); 
+  m_dataCallback = new DataCallback (dataCallback);
 }
 
 Closure::Closure(const Closure &other)
@@ -14,7 +14,7 @@
   Closure(other.m_retry, *(other.m_dataCallback), *(other.m_timeoutCallback));
 }
 
-Closure::~Closure () 
+Closure::~Closure ()
 {
   delete m_dataCallback;
   delete m_timeoutCallback;
@@ -22,20 +22,20 @@
   m_timeoutCallback = NULL;
 }
 
-Closure::TimeoutCallbackReturnValue 
+Closure::TimeoutCallbackReturnValue
 Closure::runTimeoutCallback(const string &interest)
 {
   if ((*m_timeoutCallback).empty())
   {
     return RESULT_OK;
   }
-  
+
   return (*m_timeoutCallback)(interest);
 }
 
 
-void 
-Closure::runDataCallback(const string &name, const Bytes &content) 
+void
+Closure::runDataCallback(const string &name, const Bytes &content)
 {
   if (m_dataCallback != NULL) {
     (*m_dataCallback)(name, content);