if PQconsumeInput returns 0, something broke, throw an error!

Author: wink

src/binding.cc

@@ -384,6 +384,8 @@ class Connection : public ObjectWrap {
     if(revents & EV_READ) {
       TRACE("revents & EV_READ");
       if(PQconsumeInput(connection_) == 0) {
+        End();
+	EmitLastError();
         LOG("Something happened, consume input is 0");
         return;
       }