kip, npdm: Prevent const qualifier discarding warnings from occurring

Given this is an allocated buffer that the caller needs to deal with,
the return type being const causes warnings when passing to free.

kip.c

@@ -105,9 +105,9 @@ void ini1_save(ini1_ctx_t *ctx) {
     }
 }
 
-const char *kip1_get_json(kip1_ctx_t *ctx) {
+char *kip1_get_json(kip1_ctx_t *ctx) {
     cJSON *kip_json = cJSON_CreateObject();
-    const char *output_str = NULL;
+    char *output_str = NULL;
     char work_buffer[0x300] = {0};
 
     /* Add KIP1 header fields. */
@@ -272,7 +272,7 @@ void kip1_save(kip1_ctx_t *ctx) {
                 fprintf(stderr, "Failed to open %s!\n", json_path->char_path);
                 return;
             }
-            const char *json = kip1_get_json(ctx);
+            char *json = kip1_get_json(ctx);
             if (json == NULL) {
                 fprintf(stderr, "Failed to allocate KIP1 JSON\n");
                 exit(EXIT_FAILURE);

kip.h

@@ -54,7 +54,7 @@ void ini1_process(ini1_ctx_t *ctx);
 void ini1_print(ini1_ctx_t *ctx);
 void ini1_save(ini1_ctx_t *ctx);
 
-const char *kip1_get_json(kip1_ctx_t *ctx);
+char *kip1_get_json(kip1_ctx_t *ctx);
 void kip1_process(kip1_ctx_t *ctx);
 void kip1_print(kip1_ctx_t *ctx, int suppress);
 void kip1_save(kip1_ctx_t *ctx);

npdm.c

@@ -672,7 +672,7 @@ void npdm_save(npdm_t *npdm, hactool_ctx_t *tool_ctx) {
         return;
     }
 
-    const char *json = npdm_get_json(npdm);
+    char *json = npdm_get_json(npdm);
     if (fwrite(json, 1, strlen(json), f_json) != strlen(json)) {
         fprintf(stderr, "Failed to write JSON file!\n");
         exit(EXIT_FAILURE);
@@ -832,11 +832,11 @@ cJSON *kac_get_json(uint32_t *descriptors, uint32_t num_descriptors) {
     return kac_json;
 }
 
-const char *npdm_get_json(npdm_t *npdm) {
+char *npdm_get_json(npdm_t *npdm) {
     npdm_acid_t *acid = npdm_get_acid(npdm);
     npdm_aci0_t *aci0 = npdm_get_aci0(npdm);
     cJSON *npdm_json = cJSON_CreateObject();
-    const char *output_str = NULL;
+    char *output_str = NULL;
     char work_buffer[0x300] = {0};
 
     /* Add NPDM header fields. */

npdm.h

@@ -139,7 +139,7 @@ void npdm_save(npdm_t *npdm, hactool_ctx_t *tool_ctx);
 
 char *npdm_get_proc_category(int process_category);
 void kac_print(uint32_t *descriptors, uint32_t num_descriptors);
-const char *npdm_get_json(npdm_t *npdm);
+char *npdm_get_json(npdm_t *npdm);
 
 void cJSON_AddU8ToObject(cJSON *obj, char *name, uint8_t val);
 void cJSON_AddU16ToObject(cJSON *obj, char *name, uint16_t val);