don't initialize "in" as it is initialized again one line below.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>

--- libc/console.c	(.../branches/upstream/libpayload)	
+++ libc/console.c	(.../trunk/libpayload)	
@@ -110,7 +110,7 @@
 #ifdef CONFIG_USB
 		usb_poll();
 #endif
-		struct console_input_driver *in = console_in;
+		struct console_input_driver *in;
 		for (in = console_in; in != 0; in = in->next)
 			if (in->havechar())
 				return in->getchar();