demux: adaptative: fix format id sign

modules/demux/adaptative/StreamFormat.cpp

@@ -26,7 +26,7 @@ StreamFormat::operator unsigned() const
     return formatid;
 }
 
-StreamFormat::StreamFormat( int formatid_ )
+StreamFormat::StreamFormat( unsigned formatid_ )
 {
     formatid = formatid_;
 }

modules/demux/adaptative/StreamFormat.hpp

@@ -28,7 +28,7 @@ namespace adaptative
         public:
             static const unsigned UNSUPPORTED = 0;
 
-            StreamFormat( int = UNSUPPORTED );
+            StreamFormat( unsigned = UNSUPPORTED );
             ~StreamFormat();
             operator unsigned() const;
             bool operator==(const StreamFormat &) const;