sdpplin_free() and rmff_free_header() already check for NULL.

modules/access/rtsp/real.c

@@ -519,13 +519,13 @@ rmff_header_t *real_parse_sdp(char *data, char **stream_rules, uint32_t bandwidt
 
   rmff_fix_header(header);
 
-  if( desc ) sdpplin_free( desc );
+  sdpplin_free( desc );
   free( buf );
   return header;
 
 error:
-  if( desc ) sdpplin_free( desc );
-  if( header ) rmff_free_header( header );
+  sdpplin_free( desc );
+  rmff_free_header( header );
   free( buf );
   return NULL;
 }
@@ -725,7 +725,7 @@ rmff_header_t  *real_setup_and_get_header(rtsp_client_t *rtsp_session, int bandw
   return h;
 
 error:
-  if( h ) rmff_free_header( h );
+  rmff_free_header( h );
   free( challenge1 );
   free( session_id );
   free( description );