Fix cppcheck errors

https://github.com/Hamlib/Hamlib/issues/1350

rigs/icom/ic7300.c

@@ -1832,8 +1832,8 @@ int ic7300_set_parm(RIG *rig, setting_t parm, value_t val)
 int ic7300_get_parm(RIG *rig, setting_t parm, value_t *val)
 {
     unsigned char prmbuf[MAXFRAMELEN], resbuf[MAXFRAMELEN];
-    int prm_len, res_len;
-    int prm_cn, prm_sc;
+    int prm_len = 0, res_len;
+    int prm_cn = 0, prm_sc = 0;
     int icom_val = 0;
     int cmdhead;
     int retval;

rigs/icom/ic765.c

@@ -82,12 +82,9 @@ const struct rig_caps ic765_caps =
     .has_set_level =  RIG_LEVEL_NONE,
     .has_get_parm =  RIG_PARM_NONE,
     .has_set_parm =  RIG_PARM_NONE,
-#if 0
     .level_gran =
     {
-#include "level_gran_icom.h"
     },
-#endif
     .parm_gran =  {},
     .ctcss_list =  NULL,
     .dcs_list =  NULL,

rigs/icom/ic821h.c

@@ -57,7 +57,7 @@ static const struct icom_priv_caps ic821h_priv_caps =
 int ic821h_set_split_vfo(RIG *rig, vfo_t vfo, split_t split, vfo_t tx_vfo)
 {
     struct icom_priv_data *priv = (struct icom_priv_data *) rig->state.priv;
-    int retval;
+    int retval = -RIG_EINTERNAL;
 
     ENTERFUNC;
     rig_debug(RIG_DEBUG_TRACE, "%s: vfo=%s, split=%d, tx_vfo=%s\n", __func__,

rigs/icom/icom.c

@@ -8286,6 +8286,7 @@ int icom_get_powerstat(RIG *rig, powerstat_t *status)
                   RIG_POWER_ON : RIG_POWER_OFF;
     }
 
+    HAMLIB_TRACE;
     if (RIG_IS_IC2730
             || RIG_IS_IC705
             || RIG_IS_IC7100
@@ -8301,16 +8302,27 @@ int icom_get_powerstat(RIG *rig, powerstat_t *status)
         freq_t freq;
         short retry_save = rig->state.rigport.retry;
         short timeout_retry_save = rig->state.rigport.timeout_retry;
+    HAMLIB_TRACE;
 
         rig->state.rigport.retry = 0;
         rig->state.rigport.timeout_retry = 0;
 
         retval = rig_get_freq(rig, RIG_VFO_A, &freq);
 
+        if (retval == -RIG_ETIMEOUT)
+        { // then rig must be turned off
+    HAMLIB_TRACE;
+            rig_debug(RIG_DEBUG_WARN, "%s: get freq failed...assuming power is off\n", __func__);
+            rig->state.powerstat = RIG_POWER_OFF;
+            return RIG_OK; // returning RIG_OK here makes the rig->state reflect POWER_OFF
+        }
+    HAMLIB_TRACE;
+
         rig->state.rigport.retry = retry_save;
         rig->state.rigport.timeout_retry = timeout_retry_save;
 
         *status = retval == RIG_OK ? RIG_POWER_ON : RIG_POWER_OFF;
+        rig->state.powerstat = *status;
         return retval;
     }
     else
@@ -8318,6 +8330,12 @@ int icom_get_powerstat(RIG *rig, powerstat_t *status)
         retval = icom_transaction(rig, C_SET_PWR, -1, NULL, 0,
                                   ackbuf, &ack_len);
 
+        if (retval == -RIG_ETIMEOUT)
+        { // then rig must be turned off
+            rig_debug(RIG_DEBUG_WARN, "%s: get powerstat failed...assuming power is off\n", __func__);
+            rig->state.powerstat = RIG_POWER_OFF;
+            return RIG_OK; // returning RIG_OK here makes the rig->state reflect POWER_OFF
+        }
         if (retval != RIG_OK)
         {
             RETURNFUNC(retval);
@@ -8551,7 +8569,7 @@ int icom_get_ant(RIG *rig, vfo_t vfo, ant_t ant, value_t *option,
                  ant_t *ant_curr, ant_t *ant_tx, ant_t *ant_rx)
 {
     unsigned char ackbuf[MAXFRAMELEN];
-    int ack_len = sizeof(ackbuf), retval;
+    int ack_len = sizeof(ackbuf), retval = -RIG_EINTERNAL;
     struct icom_priv_caps *priv_caps = (struct icom_priv_caps *) rig->caps->priv;