add an assert in case the sizeof int ever becomes bigger.. Then we will

have issues, at least we'll know where one of them are..

Submitted by:	Erich Dollansky

contrib/top/utils.c

@@ -58,6 +58,7 @@ char *str;
 				 * ever convert will be 2^32-1, which is 10
 				 * digits.
 				 */
+_Static_assert(sizeof(int) <= 4, "buffer too small for this sized int");
 
 char *itoa(val)