Fix tinycurses compilation when only serial console is enabled (unused variable
c caught by -Wall -Werror). Thanks to Mats Erik Andersson for spotting this.

Signed-off-by: Ulf Jordan <jordan@chalmers.se>

Index: libpayload/curses/tinycurses.c
===================================================================
--- libpayload/curses/tinycurses.c	(revision 3625)
+++ libpayload/curses/tinycurses.c	(working copy)
@@ -736,9 +736,6 @@
 		for (x = win->_line[y].firstchar; x <= win->_line[y].lastchar; x++) {
 			attr_t attr = win->_line[y].text[x].attr;
 
-			unsigned int c =
-				((int)color_pairs[PAIR_NUMBER(attr)]) << 8;
-
 #ifdef CONFIG_SERIAL_CONSOLE
 			if (curses_flags & F_ENABLE_SERIAL) {
 				ch = win->_line[y].text[x].chars[0];
@@ -806,6 +803,9 @@
 			}
 #endif
 #ifdef CONFIG_VIDEO_CONSOLE
+			unsigned int c =
+				((int)color_pairs[PAIR_NUMBER(attr)]) << 8;
+
 			c = SWAP_RED_BLUE(c);
 
 			if (curses_flags & F_ENABLE_CONSOLE) {