Changed code a little to avoid compiler warnings about

uninitialized variables.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402504

dlib/stack_trace.cpp

@@ -21,6 +21,11 @@ namespace dlib
     {
         struct stack_tracer_data
         {
+            stack_tracer_data(
+            ) :  funct_name(0),
+                 file_name(0),
+                 line_number(0)
+            {}
             const char* funct_name;
             const char* file_name;
             int line_number;

dlib/threads/thread_specific_data_extension.h

@@ -111,8 +111,8 @@ namespace dlib
         )
         {
             const thread_id_type id = get_thread_id();
-            thread_id_type junk;
-            T* item;
+            thread_id_type junk = 0;
+            T* item = 0;
             auto_mutex M(m);
             --thread_end_handler_calls_left;
             if (items[id])