Merge pull request #5 from lultimouomo/gccfix

Fix compilation on GCC
Patch is logically good, merge first.

Author: melode11

src/internal/sio_client_impl.cpp

@@ -321,7 +321,7 @@ namespace sio
     unsigned client_impl::next_delay() const
     {
         //no jitter, fixed power root.
-        return (unsigned)min(m_reconn_delay * pow(1.5,m_reconn_made),m_reconn_delay_max);
+        return min<unsigned>(m_reconn_delay * pow(1.5,m_reconn_made),m_reconn_delay_max);
     }
 
     void client_impl::send(packet& p)

src/internal/sio_client_impl.h

@@ -89,7 +89,7 @@ void set_##__FIELD__(__TYPE__ const& l) \
         // Client Functions - such as send, etc.
         void connect(const std::string& uri);
 
-        socket::ptr const& socket(const std::string& nsp);
+        ::sio::socket::ptr const& socket(const std::string& nsp);
 
         // Closes the connection
         void close();

src/sio_client.h

@@ -62,7 +62,7 @@ namespace sio
 
         void set_reconnect_delay_max(unsigned millis);
 
-        socket::ptr const& socket(const std::string& nsp = "");
+        ::sio::socket::ptr const& socket(const std::string& nsp = "");
 
         // Closes the connection
         void close();