Use waitpid instead of waitid to save four bytes

vondehi.asm

@@ -12,7 +12,7 @@
 
 %define SYS_memfd_create	356
 %define SYS_fork			2
-%define SYS_waitid			284
+%define SYS_waitpid			7
 %define SYS_execve			11
 %define SYS_open			5
 %define SYS_lseek			19
@@ -27,14 +27,16 @@ org 0xEBDB0000
 
 ehdr: ;~e_ident
 	; jg short 0x47 (inc ebp) ; dec esp ; inc esi
-	db 0x7F,"EL";"F"	;!E_MAGIC
-_parent:
-	inc esi
+	db 0x7F,"ELF"	;!E_MAGIC
 _parent.0:
 	xor ebx, ebx
-	mov ax, SYS_waitid
-	lea esi, [ebx+P_ALL]
+	xchg eax, edi ;edi is zero now and will be overwritten eventually
+	mov al, SYS_waitpid
 	int 0x80
+	nop
+	nop
+	nop
+	nop
 
 	db 0x3D ; cmp eax, ...
 	dw 2			;!e_type
@@ -109,7 +111,7 @@ _start.4:
 	int 0x80
 
 	test eax, eax
-	jnz short _parent
+	jnz short _parent.0
 	;jz short _child
 
 ;_parent: