remove a "unused parameter" warning

Arrigo Marchiori

2016-10-14 736d46e8b3df141a8178c2e57e330a04ff775a35

 libscpi/inc/scpi/types.h

@@ -328,7 +328,7 @@
        union {
            double value;
            int32_t tag;
        };
        } content;
        scpi_unit_t unit;
        int8_t base;
    };