dash: Working arround specifications ambiguity.

profile is spelled once as "profile", and "profiles" a few line after,
so we now handle both.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
(cherry picked from commit 5f030063)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/stream_filter/dash/mpd/BasicCMParser.cpp

@@ -65,6 +65,8 @@ bool    BasicCMParser::setMPD()
 
     std::map<std::string, std::string>::const_iterator  it;
     it = attr.find( "profile" );
+    if ( it == attr.end() )
+        it = attr.find( "profiles" ); //The standard spells it the two ways...
     if ( it != attr.end() )
         this->mpd->setProfile( it->second );