don't pass argc in getopt32, it's superfluous

(add/remove: 0/0 grow/shrink: 12/131 up/down: 91/-727) Total: -636 bytes
   text    data     bss     dec     hex filename
 773469    1058   11092  785619   bfcd3 busybox_old
 772644    1058   11092  784794   bf99a busybox_unstripped

procps/pidof.c

@@ -28,7 +28,7 @@ int pidof_main(int argc, char **argv)
 #endif
 
 	/* do unconditional option parsing */
-	opt = getopt32(argc, argv, ""
+	opt = getopt32(argv, ""
 			USE_FEATURE_PIDOF_SINGLE ("s")
 			USE_FEATURE_PIDOF_OMIT("o:", &omits));