Fix compilation on systems without uint like windows

libretroshare/src/services/p3gxsmails.cpp

@@ -19,6 +19,7 @@
 #include "p3gxsmails.h"
 #include "util/stacktrace.h"
 
+typedef unsigned int uint;
 
 p3GxsMails::~p3GxsMails()
 {

libretroshare/src/services/p3msgservice.cc

@@ -65,6 +65,8 @@
 //#define DISABLE_DISTANT_MESSAGES 
 //#define DEBUG_DISTANT_MSG
 
+typedef unsigned int uint;
+
 using namespace Rs::Msgs;
 
 static struct RsLog::logInfo msgservicezoneInfo = {RsLog::Default, "msgservice"};