update hashmap library

src/utils/utils.c

@@ -61,7 +61,7 @@ char *cws_strip(char *str) {
 	return str;
 }
 
-int my_str_hash_fn(void *key) {
+unsigned int my_str_hash_fn(const void *key) {
 	char *key_str = (char *)key;
 	size_t key_len = strlen(key_str);
 
@@ -74,7 +74,7 @@ int my_str_hash_fn(void *key) {
 	return total % 2069;
 }
 
-bool my_str_equal_fn(void *a, void *b) {
+bool my_str_equal_fn(const void *a, const void *b) {
 	if (strcmp((char *)a, (char *)b) == 0) {
 		return true;
 	}
@@ -84,9 +84,9 @@ bool my_str_equal_fn(void *a, void *b) {
 
 void my_str_free_fn(void *value) { free(value); }
 
-int my_int_hash_fn(void *key) { return *(int *)key; }
+unsigned int my_int_hash_fn(const void *key) { return *(int *)key; }
 
-bool my_int_equal_fn(void *a, void *b) {
+bool my_int_equal_fn(const void *a, const void *b) {
 	int ai = *(int *)a;
 	int bi = *(int *)b;