fix two memory leaks and clear mqs befor usage

src/error.h

@@ -25,16 +25,17 @@ namespace p3 {
 	class perror : std::exception {
 		std::string context;
 		std::string error;
+		std::string message;
 
 		public:
-			perror(std::string c, std::string e) : context(c), error(e) {};
+			perror(std::string c, std::string e) : context(c), error(e), message(c + ": " + e) {};
 			~perror() throw () {};
 
 			const char * getContext() { return context.c_str(); }
 			const char * getError() { return error.c_str(); }
 
 			const char* what() const throw() {
-				return (context + ": " + error).c_str();
+				return message.c_str();
 			}
 	};
 }

src/msgq.cpp

@@ -38,6 +38,10 @@ p3::mQueue::mQueue(const std::string& id, bool c, bool p) :
 		flags |= O_CREAT;
 		inkey = key + "-2";
 		outkey = key + "-1";
+
+		// Make sure our queues are clean
+		mq_unlink(inkey.c_str());
+		mq_unlink(outkey.c_str());
 	} else {
 		inkey = key + "-1";
 		outkey = key + "-2";

src/sipphone.cpp

@@ -129,7 +129,7 @@ p3::sipphone::~sipphone() {
 
 void p3::sipphone::register_thread(const std::string& id) {
 	std::lock_guard<std::mutex> g(threads_mutex);
-	pj_thread_desc* ptd = new pj_thread_desc[1];
+	pj_thread_desc* ptd = new pj_thread_desc[1]();
 	pj_thread_t* tptr;
 	pj_thread_register(id.c_str(), *ptd, &tptr);
 	pj_threads[id] = { tptr, ptd };