Fix clang warnings

https://github.com/Hamlib/Hamlib/issues/1450

security/sctest.c

@@ -129,7 +129,7 @@ int main(int argc, char *argv[])
          */
         strcpy(plaintext, pass_input);
         printf("Plaintext: %s\n", plaintext);
-        printf("Plaintext length: %ld\n", strlen(plaintext));
+        printf("Plaintext length: %d\n", (int)strlen(plaintext));
 
         /*
          * Encrypt the string

tests/hamlibmodels.c

@@ -7,7 +7,7 @@ char *list[1000]; // as of 2023-01-17 we have 275 rigs so this should cover us f
 
 int nmodels = 0;
 
-static int hash_model_list(const struct rig_caps *caps, void *data)
+static int hash_model_list(struct rig_caps *caps, void *data)
 {
     char s[256];
     sprintf(s, "%s %s", caps->mfg_name, caps->model_name);

tests/listrigs.c

@@ -27,7 +27,7 @@
 #include <hamlib/rig.h>
 
 
-int print_caps_sum(const struct rig_caps *caps, void *data)
+int print_caps_sum(struct rig_caps *caps, void *data)
 {
     const char *fmt1 = "%-13s";
     printf("%6u \t%-22s \t%-23s\t%-8s   \t",

tests/rigctld.c

@@ -867,7 +867,7 @@ int main(int argc, char *argv[])
             freeaddrinfo(saved_result);     /* No longer needed */
             exit(2);
         }
-    int optval = 1;
+    const int optval = 1;
 #ifdef __MINGW32__
     if (setsockopt(sock_listen, SOL_SOCKET, SO_REUSEADDR, (PCHAR)&optval, sizeof(optval)) < 0)
 #else

tests/testmW2power.c

@@ -13,7 +13,7 @@
 
 int nrigs = 0;
 
-int callback(const struct rig_caps *caps, rig_ptr_t rigp)
+int callback(struct rig_caps *caps, rig_ptr_t rigp)
 {
     RIG *rig = (RIG *) rigp;
 

tests/testrig.c

@@ -78,7 +78,7 @@ int main(int argc, const char *argv[])
     }
 
     uint64_t levels = rig_get_caps_int(my_rig->caps->rig_model, RIG_CAPS_HAS_GET_LEVEL);
-    printf("HAS_GET_LEVEL=0x%8lx, SWR=%8llx,true=%d\n", levels, levels & RIG_LEVEL_SWR, (levels & RIG_LEVEL_SWR) == RIG_LEVEL_SWR);
+    printf("HAS_GET_LEVEL=0x%8llx, SWR=%8llx,true=%d\n", levels, levels & RIG_LEVEL_SWR, (levels & RIG_LEVEL_SWR) == RIG_LEVEL_SWR);
 
     char val[256];
     retcode = rig_get_conf2(my_rig, rig_token_lookup(my_rig, "write_delay"), val,

tests/testrigopen.c

@@ -16,7 +16,7 @@
 
 #define SERIAL_PORT "/dev/ttyUSB0"
 
-int callback(const struct rig_caps *caps, rig_ptr_t rigp)
+int callback(struct rig_caps *caps, rig_ptr_t rigp)
 {
     RIG *rig = (RIG *) rigp;