Fix event commands adding semi-colons to output

Howard Li

2020-04-28 47bd350398607f06c093807288ffb8cf6cb7e05e

 libscpi/test/test_parser.c

@@ -257,6 +257,9 @@
    TEST_INPUT("*IDN?;*IDN?;*IDN?;*IDN?\r\n", "MA,IN,0,VER;MA,IN,0,VER;MA,IN,0,VER;MA,IN,0,VER\r\n");
    output_buffer_clear();

    TEST_INPUT("*IDN?;STUB\r\n", "MA,IN,0,VER\r\n");
    output_buffer_clear();

    TEST_INPUT("*IDN?;*OPC;*IDN?\r\n", "MA,IN,0,VER;MA,IN,0,VER\r\n");
    output_buffer_clear();