Correlation issue - conversion from hex to string

void convert_hexparam(const char* paramName)
{
	char* src=0;
	char* psrc=0;
	char* dst = 0;
	char* pdst = 0;

	size_t srclen = 0;

	char c;
	char buf[5];

	char enclosedParamName[256];

	sprintf(enclosedParamName, "{%s}", paramName);
	src=lr_eval_string(enclosedParamName);

	srclen = strlen(src);

	dst = (char*)malloc(srclen);
	memset(dst, 0, srclen);

	for(psrc=src, pdst = dst; *psrc != '\0'; pdst++)
	{
		if(*psrc== '\\' && *(psrc + 1) == 'x')
		{
			memset(buf, 0, 5);
			buf[0] = '0';
			buf[1] = 'x';
			buf[2] = *(psrc + 2);
			buf[3] = *(psrc + 3);
			c = (char)strtol(buf, 0, 0 );

			*pdst  = c;
			psrc += 4;
		}
		else
		{
			*pdst = *psrc;
			++psrc;
		}	
	}
	*(pdst+1) = '\0';

	lr_save_string(dst, paramName);

	free(dst);
}

Action()
{
	lr_save_string("tjIAKJprJ\\x2FxoK2GJL\\x2BZMhgUm9Wat4j16dw\\x2B7o4d9Lak\\x3D", "hex_data");

	lr_output_message(lr_eval_string("{hex_data}"));

	convert_hexparam("hex_data");

	lr_output_message(lr_eval_string("{hex_data}"));

	return 0;
}