Use std::unordered_map<> in Unix wxAppConsole

Replace a wx synonym with the direct use of the standard class.

include/wx/unix/app.h

@@ -10,6 +10,8 @@
 //Ensure that sigset_t is being defined
 #include <signal.h>
 
+#include <unordered_map>
+
 class wxFDIODispatcher;
 class wxFDIOHandler;
 class wxWakeUpPipe;
@@ -64,8 +66,7 @@ private:
     sigset_t m_signalsCaught;
 
     // the signal handlers
-    WX_DECLARE_HASH_MAP(int, SignalHandler, wxIntegerHash, wxIntegerEqual, SignalHandlerHash);
-    SignalHandlerHash m_signalHandlerHash;
+    std::unordered_map<int, SignalHandler> m_signalHandlerHash;
 
     // pipe used for wake up signal handling: if a signal arrives while we're
     // blocking for input, writing to this pipe triggers a call to our CheckSignal()

src/unix/appunix.cpp

@@ -115,15 +115,13 @@ void wxAppConsole::HandleSignal(int signal)
 
 void wxAppConsole::CheckSignal()
 {
-    for ( SignalHandlerHash::iterator it = m_signalHandlerHash.begin();
-          it != m_signalHandlerHash.end();
-          ++it )
+    for ( const auto& kv : m_signalHandlerHash )
     {
-        int sig = it->first;
+        int sig = kv.first;
         if ( sigismember(&m_signalsCaught, sig) )
         {
             sigdelset(&m_signalsCaught, sig);
-            (it->second)(sig);
+            (kv.second)(sig);
         }
     }
 }