stream: fix headers and missing static keyword

lib/stream.cpp

@@ -1,6 +1,8 @@
 /// \file stream.cpp
 /// Utilities for handling streams.
 
+#include <sys/stat.h>
+#include <sys/types.h>
 #include "stream.h"
 #include "procs.h"
 #include "socket.h"

lib/stream.h

@@ -3,12 +3,12 @@
 
 #pragma once
 #include <string>
-#include <mist/socket.h>
+#include "socket.h"
 
 namespace Util{
   class Stream{
     /// Sanitize a streamname.
-    void sanitizeName(std::string & streamname);
+    static void sanitizeName(std::string & streamname);
   public:
     /// Get a connection to a Live stream.
     static Socket::Connection getLive(std::string streamname);