Fix segfault in powerminmax for kenwood

rigs/kenwood/kenwood.c

@@ -3034,8 +3034,10 @@ static int kenwood_get_power_minmax(RIG *rig, int *power_now, int *power_min,
     // TS890S can't take power levels outside 5-100 and 5-25
     // So all we'll do is read power_now
     case RIG_MODEL_TS890S:
-        rs->power_min = *power_min = 5;
-        rs->power_max = *power_max = 100;
+        rs->power_min = 5;
+        rs->power_max = 100;
+        if (power_min) *power_min = 5;
+        if (power_max) *power_max = 5;
 
         if (rs->current_mode == RIG_MODE_AM) { *power_max = 50; }
 

rigs/kenwood/kenwood.h

@@ -28,7 +28,7 @@
 #include "token.h"
 #include "idx_builtin.h"
 
-#define BACKEND_VER "20240925"
+#define BACKEND_VER "20241001"
 
 #define EOM_KEN ';'
 #define EOM_TH '\r'