uuencode: shrink

function                                             old     new   delta
uuencode_main                                        427     337     -90
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-90)             Total: -90 bytes
   text    data     bss     dec     hex filename
 734981    3028   14400  752409   b7b19 busybox_old
 734889    3028   14400  752317   b7abd busybox_unstripped

diff --git a/include/libbb.h b/include/libbb.h
index 3cdf28f..124b11f 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -884,7 +884,7 @@
 
 extern const char bb_uuenc_tbl_base64[];
 extern const char bb_uuenc_tbl_std[];
-void bb_uuencode(const unsigned char *s, char *store, const int length, const char *tbl);
+void bb_uuencode(char *store, const void *s, int length, const char *tbl);
 
 typedef struct sha1_ctx_t {
 	uint32_t count[2];