Fixed a compile time error and also added back in the call to start the

event_handler_thread in the gui core that I accidentally deleted a few minutes ago.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402566

dlib/gui_core/gui_core_kernel_1.cpp

@@ -287,7 +287,11 @@ namespace dlib
             auto_mutex M(*global_mutex());
             static shared_ptr_thread_safe<event_handler_thread> p;
             if (p.get() == 0)
+            {
                 p.reset(new event_handler_thread());
+                global_mutex()->unlock();
+                p->start_event_thread();
+            }
             return p;
         }
 

dlib/gui_core/gui_core_kernel_1.h

@@ -166,7 +166,7 @@ namespace dlib
     class base_window
     {
         friend LRESULT CALLBACK gui_core_kernel_1_globals::WndProc (HWND, UINT, WPARAM, LPARAM);
-        shared_ptr_thread_safe<event_handler_thread> globals;
+        shared_ptr_thread_safe<gui_core_kernel_1_globals::event_handler_thread> globals;
 
         HWND hwnd;
         DWORD style;