[coreboot] [PATCH] libpayload: Fix build when both USB and PS/2 keyboard support is disabled

[Mart Raudsepp]

libpayload: Fix build when both USB and PS/2 keyboard support is disabled

libpayload uses -Werror for some reason right now, and the
variable 'c' in curses_getchar is only used if CONFIG_USB_HID
or CONFIG_PC_KEYBOARD is defined, giving an unused variable
warning that gets promoted to an error.
So wrap the variable declaration around appropriate #ifdef's

Signed-off-by: Mart Raudsepp 
---
 libpayload/curses/keyboard.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/libpayload/curses/keyboard.c b/libpayload/curses/keyboard.c
index 4a96428..4a83391 100644
--- a/libpayload/curses/keyboard.c
+++ b/libpayload/curses/keyboard.c
@@ -146,7 +146,9 @@ static int cook_serial(unsigned char ch)

static int curses_getchar(int delay)
 {
+#if defined(CONFIG_USB_HID) || defined(CONFIG_PC_KEYBOARD)
    unsigned short c;
+#endif

do {
 #ifdef CONFIG_USB_HID