Merge pull request #2225 from bluca/select_broken

Problem: select broken

acinclude.m4

@@ -898,7 +898,7 @@ FD_ZERO(&t_rfds);
 FD_SET(0, &t_rfds);
 tv.tv_sec = 5;
 tv.tv_usec = 0;
-select(1, &t_rfds, NULL, NULL, &tv);
+select(1, &t_rfds, 0, 0, &tv);
         ]])],
         [$1],[$2]
     )

src/select.cpp

@@ -53,8 +53,8 @@ zmq::select_t::select_t (const zmq::ctx_t &ctx_) :
     //  Fine as long as map is not cleared.
     current_family_entry_it (family_entries.end ()),
 #else
-    retired (false),
     maxfd (retired_fd),
+    retired (false),
 #endif
     stopping (false)
 {