cleanup

boot/cmdline.c

@@ -1,8 +1,8 @@
+#include <zinnia/cmdline.h>
+#include <zinnia/init.h>
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
-#include <zinnia/cmdline.h>
-#include <zinnia/init.h>
 
 // Defined in linker script.
 extern const struct cmdline_option* __ld_cmdline_start[];
@@ -12,6 +12,9 @@ static char cmdline_buf[0x1000];
 
 [[__init]]
 void cmdline_parse(const char* cmdline) {
+    if (cmdline == nullptr)
+        cmdline = "";
+
     const size_t len = strnlen(cmdline, sizeof(cmdline_buf) - 1);
     size_t idx = 0;
     memcpy(cmdline_buf, cmdline, len);