Merge pull request #1202 from pavel-pimenov/fix-pvs-studio

PVS Studio small fix

src/session_base.cpp

@@ -494,7 +494,7 @@ void zmq::session_base_t::start_connecting (bool wait_)
     //  Create the connecter object.
 
     if (addr->protocol == "tcp") {
-        if (options.socks_proxy_address != "") {
+        if (!options.socks_proxy_address.empty()) {
             address_t *proxy_address = new (std::nothrow)
                 address_t ("tcp", options.socks_proxy_address);
             alloc_assert (proxy_address);

src/stream_engine.cpp

@@ -96,7 +96,7 @@ zmq::stream_engine_t::stream_engine_t (fd_t fd_, const options_t &options_,
 
     int family = get_peer_ip_address (s, peer_address);
     if (family == 0)
-        peer_address = "";
+        peer_address.clear();
 #if defined ZMQ_HAVE_SO_PEERCRED
     else
     if (family == PF_UNIX) {
@@ -781,7 +781,7 @@ void zmq::stream_engine_t::mechanism_ready ()
     it = zap_properties.begin ();
     while (it != zap_properties.end ()) {
         properties.insert (properties_t::value_type (it->first, it->second));
-        it++;
+        ++it;
     }
 
     //  Add ZMTP properties.
@@ -789,7 +789,7 @@ void zmq::stream_engine_t::mechanism_ready ()
     it = zmtp_properties.begin ();
     while (it != zmtp_properties.end ()) {
         properties.insert (properties_t::value_type (it->first, it->second));
-        it++;
+        ++it;
     }
 
     zmq_assert (metadata == NULL);