Fix missing WEXITSTATUS in init and kernel.

sortix/kernel.cpp

@@ -32,6 +32,7 @@
 #include <sortix/kernel/textbuffer.h>
 #include <sortix/kernel/pci.h>
 #include <sortix/kernel/worker.h>
+#include <sortix/wait.h>
 #include <libmaxsi/error.h>
 #include <libmaxsi/memory.h>
 #include <libmaxsi/string.h>
@@ -331,6 +332,8 @@ static void BootThread(void* /*user*/)
 	if ( pid != init->pid )
 		PanicF("Waiting for init to exit returned %i (errno=%i)", pid, errno);
 
+	status = WEXITSTATUS(status);
+
 	switch ( status )
 	{
 	case 0: CPU::ShutDown();

utils/init.cpp

@@ -55,7 +55,7 @@ int runsystem()
 			printf("Looks like the system crashed, trying to bring it back up.\n");
 			return runsystem();
 		}
-		return status;
+		return WEXITSTATUS(status);
 	}
 
 	int ret = child();