DVB access: kill 3 warnings

modules/access/dvb/linux_dvb.c

@@ -1042,7 +1042,7 @@ static int FrontendSetQAM( access_t *p_access )
     access_sys_t *p_sys = p_access->p_sys;
     frontend_t *p_frontend = p_sys->p_frontend;
     struct dvb_frontend_parameters fep;
-    int i_val;
+    unsigned int i_val;
 
     /* Prepare the fep structure */
 

modules/access/dvb/scan.c

@@ -786,7 +786,7 @@ void scan_session_Clean( scan_t *p_scan, scan_session_t *p_session )
                     if( s )
                     {
                         if( !s->psz_name )
-                            s->psz_name = dvbsi_to_utf8( pD->i_service_name, pD->i_service_name_length );
+                            s->psz_name = dvbsi_to_utf8( (const char *)pD->i_service_name, pD->i_service_name_length );
 
                         if( s->type == SERVICE_UNKNOWN )
                         {