need to implement default constructor

include/dbus-c++/eventloop.h

@@ -126,7 +126,16 @@ class DXXAPI DefaultMutex
 {
 public:
 
-	DefaultMutex(bool recursive = false);
+  /*!
+   * Constructor for non recursive Mutex
+   */
+  DefaultMutex();
+
+  /*!
+   * Constructor
+   * \param recursive Set if Mutex should be recursive or not.
+   */
+	DefaultMutex(bool recursive);
 
 	~DefaultMutex();
 

src/eventloop.cpp

@@ -75,6 +75,11 @@ DefaultWatch::~DefaultWatch()
 	_disp->_mutex_w.unlock();
 }
 
+DefaultMutex::DefaultMutex()
+{
+	pthread_mutex_init(&_mutex, NULL);
+}
+
 DefaultMutex::DefaultMutex(bool recursive)
 {
 	if (recursive)