Add missing string form for RIG_FUNC_SLICE

src/misc.c

@@ -736,6 +736,7 @@ static const struct
     { RIG_FUNC_DIVERSITY, "DIVERSITY"},
     { RIG_FUNC_CSQL, "CSQL" },
     { RIG_FUNC_SCEN, "SCEN" },
+    { RIG_FUNC_SLICE, "SLICE" },
     { RIG_FUNC_TRANSCEIVE, "TRANSCEIVE" },
     { RIG_FUNC_SPECTRUM, "SPECTRUM" },
     { RIG_FUNC_SPECTRUM_HOLD, "SPECTRUM_HOLD" },