Correct optional command pattern matching

Jan Breuer

2013-10-23 b97d4493b3c997477b85a35de0a4ffa15cf742eb

 libscpi/inc/scpi/lexer.h

@@ -43,6 +43,7 @@
extern "C" {
#endif

    int SCPI_LexIsEos(lex_state_t * state);
    int SCPI_LexWhiteSpace(lex_state_t * state, token_t * token);
    int SCPI_LexProgramHeader(lex_state_t * state, token_t * token);
    int SCPI_LexQuestion(lex_state_t * state, token_t * token);