card10.cfg: use strdup instead of memcpy for strings

epicardium/meson.build

@@ -70,7 +70,7 @@ subdir('ble/')
 
 subdir('l0der/')
 
-epicardium_cargs = []
+epicardium_cargs = ['-D_POSIX_C_SOURCE=200809']
 if get_option('jailbreak_card10')
   epicardium_cargs += [
     '-DJAILBREAK_CARD10=1',

epicardium/modules/config.c

@@ -125,10 +125,7 @@ const char *elide(const char *str)
 static bool set_string(struct config_option *opt, const char *value)
 {
 	//this leaks, but the lifetime of these ends when epicardium exits, so...
-	size_t len  = strlen(value);
-	char *leaks = (char *)malloc(len + 1);
-	strncpy(leaks, value, len);
-	leaks[len]        = '\0';
+	char *leaks       = strdup(value);
 	opt->value.string = leaks;
 	LOG_DEBUG("card10.cfg", "setting '%s' to %s", opt->name, elide(leaks));
 	return true;