fix cpp

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@5157 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_cpp.h

@@ -26,7 +26,7 @@ class CoreSession {
 	int preAnswer();
 	void hangup(char *cause);
 	void setVariable(char *var, char *val);
-	void getVariable(char *var, char *val);
+	char *getVariable(char *var);
 	int playFile(char *file, char *timer_name);
 	void setDTMFCallback(switch_input_callback_function_t cb, void *buf, uint32_t buflen);
 	int speakText(char *text);

src/switch_cpp.cpp

@@ -61,10 +61,10 @@ void CoreSession::setVariable(char *var, char *val)
     switch_channel_set_variable(channel, var, val);
 }
 
-void CoreSession::getVariable(char *var, char *val)
+char *CoreSession::getVariable(char *var)
 {
-	sanity_check();
-    switch_channel_get_variable(channel, var);
+	sanity_check(NULL);
+    return switch_channel_get_variable(channel, var);
 }
 
 void CoreSession::execute(char *app, char *data)