Suppress -Winitializer-overrides warnings in ic746.c

rigs/icom/ic746.c

@@ -206,9 +206,13 @@ struct rig_caps ic746_caps =
     .has_set_parm =  RIG_PARM_ANN,
     .level_gran =
     {
+#define NO_LVL_KEYSPD
+#define NO_LVL_CWPITCH
 #include "level_gran_icom.h"
         [LVL_KEYSPD] = { .min = { .i = 6 }, .max = { .i = 48 }, .step = { .i = 1 } },
         [LVL_CWPITCH] = { .min = { .i = 300 }, .max = { .i = 900 }, .step = { .i = 1 } },
+#undef NO_LVL_KEYSPD
+#undef NO_LVL_CWPITCH
     },
     .parm_gran =  {},
     .ctcss_list =  common_ctcss_list,