For Barrett add some debug and fix another debug

https://github.com/Hamlib/Hamlib/issues/923

rigs/barrett/4050.c

@@ -101,14 +101,14 @@ static int barrett4050_open(RIG *rig)
 
     if (retval != RIG_OK)
     {
-        rig_debug(RIG_DEBUG_ERR, "%s: result=%s\n", __func__, response);
+        rig_debug(RIG_DEBUG_ERR, "%s(%d): result=%s\n", __func__, __LINE__, response);
     }
 
     retval = barrett_transaction(rig, "IC", 0, &response);
 
-    if (retval == RIG_OK)
+    if (retval != RIG_OK)
     {
-        rig_debug(RIG_DEBUG_ERR, "%s: result=%s\n", __func__, response);
+        rig_debug(RIG_DEBUG_ERR, "%s(%d): result=%s\n", __func__, __LINE__, response);
     }
 
     RETURNFUNC(RIG_OK);
@@ -119,7 +119,7 @@ const struct rig_caps barrett4050_caps =
     RIG_MODEL(RIG_MODEL_BARRETT_4050),
     .model_name =       "4050",
     .mfg_name =         "Barrett",
-    .version =          BACKEND_VER ".0e",
+    .version =          BACKEND_VER ".0f",
     .copyright =        "LGPL",
     .status =           RIG_STATUS_STABLE,
     .rig_type =         RIG_TYPE_TRANSCEIVER,

rigs/barrett/barrett.c

@@ -93,6 +93,7 @@ int barrett_transaction(RIG *rig, char *cmd, int expected, char **result)
 
         if (retval < 0)
         {
+            rig_debug(RIG_DEBUG_ERR, "%s(%d): error in read_string\n", __func__, __LINE__);
             return retval;
         }
     }
@@ -102,11 +103,11 @@ int barrett_transaction(RIG *rig, char *cmd, int expected, char **result)
 
         if (retval < 0)
         {
+            rig_debug(RIG_DEBUG_ERR, "%s(%d): error in read_block\n", __func__, __LINE__);
             return retval;
         }
     }
 
-    rig_debug(RIG_DEBUG_VERBOSE, "%s: retval=%d\n", __func__, retval);
     p = priv->ret_data;
     xon = p[0];
     xoff = p[strlen(p) - 1];

rigs/barrett/barrett.h

@@ -28,7 +28,7 @@
 #include <sys/time.h>
 #endif
 
-#define BACKEND_VER "20220112"
+#define BACKEND_VER "20220113"
 
 #define EOM "\x0d"
 #define TRUE 1