*: fix fallout from -Wunused-parameter

function                                             old     new   delta
bbunpack                                             358     366      +8
passwd_main                                         1070    1072      +2
handle_incoming_and_exit                            2651    2653      +2
getpty                                                88      86      -2
script_main                                          975     972      -3
inetd_main                                          2036    2033      -3
dname_enc                                            377     373      -4
make_new_session                                     474     462     -12
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/5 up/down: 12/-24)            Total: -12 bytes
   text    data     bss     dec     hex filename
 797429     658    7428  805515   c4a8b busybox_old
 797417     658    7428  805503   c4a7f busybox_unstripped

libbb/appletlib.c

@@ -661,7 +661,7 @@ void run_applet_and_exit(const char *name, char **argv)
 
 
 #if ENABLE_BUILD_LIBBUSYBOX
-int lbb_main(int argc, char **argv)
+int lbb_main(char **argv)
 #else
 int main(int argc ATTRIBUTE_UNUSED, char **argv)
 #endif

libbb/getpty.c

@@ -10,7 +10,9 @@
 
 #define DEBUG 0
 
-int getpty(char *line, int size)
+#define DEBUG 0
+
+int getpty(char *line)
 {
 	int p;
 #if ENABLE_FEATURE_DEVPTS
@@ -24,7 +26,7 @@ int getpty(char *line, int size)
 			bb_perror_msg("ptsname error (is /dev/pts mounted?)");
 			return -1;
 		}
-		safe_strncpy(line, name, size);
+		safe_strncpy(line, name, GETPTY_BUFSIZE);
 		return p;
 	}
 #else

libbb/lineedit.c

@@ -294,7 +294,12 @@ static void redraw(int y, int back_cursor)
 
 /* Delete the char in front of the cursor, optionally saving it
  * for later putback */
+#if !ENABLE_FEATURE_EDITING_VI
+static void input_delete(void)
+#define input_delete(save) input_delete()
+#else
 static void input_delete(int save)
+#endif
 {
 	int j = cursor;