Fix: EOS not copied to dest in strcpy()

string.asm

@@ -20,7 +20,7 @@ strlen:
 	leave
 	ret
 ;----- strcpy(char* dest, char* src) -----;
-; return value: pointer to dest or NULL if nothing was copied
+; return value: pointer to dest or NULL if nothing was copied (note that EOS is always copied to dest)
 strcpy:
 	push	rbp
 	mov	rbp, rsp
@@ -36,9 +36,9 @@ strcpy:
 		inc	rdi
 		inc	rcx
 		jmp	.loop
-	mov	byte [rdi], 0x0
 
 	.0f:
+	mov	byte [rdi], 0x0
 	cmp	rcx, 0
 	jne	.quit
 	xor	rax, rax