[BusyBox] Optimizing ping size

[Roberto Alcantara]

Guys, that's just small changes to gain some bit in ping applet.

$size ping.o original/ping.o
    text    data     bss     dec     hex filename
    2382       8     192    2582     a16 ping.o
    2394       8     192    2594     a22 original/ping.o


regards,
Roberto Alcantara
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> 	unsigned short ans = 0;
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< 	
<   if (nleft == 1) 
<       sum += *(unsigned char *) w;
---
> 
> 	if (nleft == 1) {
> 		*(unsigned char *) (&ans) = *(unsigned char *) w;
> 		sum += ans;
> 	}
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< 	return (~sum);
---
> 	ans = ~sum;
> 	return (ans);
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< 		} 
---
> 		}
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> 	int status;
> 
201c207
< 	  	       (tsum / (nreceived + nrepeats)) % 10, tmax / 10, tmax % 10);
---
> 			   (tsum / (nreceived + nrepeats)) % 10, tmax / 10, tmax % 10);
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< 		exit(EXIT_SUCCESS);
---
> 		status = EXIT_SUCCESS;
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< 		exit(EXIT_FAILURE);
---
> 		status = EXIT_FAILURE;
> 	exit(status);
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> 
323c331
< 		putchar('\n');
---
> 		printf("\n");