[mojosetup] Fix unused variable warnings in the ncurses plugin.

[Francois Gouget]

The getmaxyx() macro always returns a width and height so use a
subterfuge to silence the compiler warning when we only need one of
them.

Signed-off-by: Francois Gouget <fgouget at codeweavers.com>
---
 gui_ncurses.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gui_ncurses.c b/gui_ncurses.c
index ee53e56..223a254 100644
--- a/gui_ncurses.c
+++ b/gui_ncurses.c
@@ -109,6 +109,7 @@ static void drawButton(MojoBox *mojobox, int button)
     const char *str = mojobox->buttontext[button];
     int w, h;
     getmaxyx(win, h, w);
+    (void)h; /* unused arg. */
 
     if (!hover)
         wbkgdset(win, COLOR_PAIR(MOJOCOLOR_BUTTONNORMAL));
@@ -167,6 +168,7 @@ static void drawBackground(WINDOW *win)
     {
         int w, h;
         getmaxyx(win, h, w);
+        (void)h; /* unused arg. */
         wattron(win, COLOR_PAIR(MOJOCOLOR_BACKGROUND) | A_BOLD);
         mvwaddstr(win, 0, 0, title);
         mvwhline(win, 1, 1, ACS_HLINE, w-2);
@@ -444,6 +446,7 @@ static int upkeepBox(MojoBox **_mojobox, int ch)
 
         case KEY_DOWN:
             getmaxyx(mojobox->textwin, h, w);
+            (void)w; /* unused arg. */
             if (mojobox->textpos < (mojobox->textlinecount-h))
             {
                 mojobox->textpos++;
@@ -973,6 +976,7 @@ static int optionBox(const char *title, MojoGuiSetupOptions *opts,
                 int maxw, maxh;
                 int y = --selected - mojobox->textpos;
                 getmaxyx(win, maxh, maxw);
+                (void)maxh; /* unused arg. */
                 if (selected < mojobox->textpos)
                 {
                     upkeepBox(&mojobox, ch);  // upkeepBox does scrolling
@@ -1160,6 +1164,7 @@ static char *inputBox(const char *prompt, int *command, boolean can_back,
         {
             wrefresh(stdscr);
             getmaxyx(stdscr, h, w);
+            (void)h; /* unused arg. */
             w -= 10;
             text = (char *) xrealloc(mojobox->text, w+4);
             text[0] = '\n';
@@ -1393,6 +1398,7 @@ static boolean MojoGui_ncurses_progress(const char *type, const char *component,
         const int buttoncount = (can_cancel) ? 1 : 0;
         char *spacebuf = NULL;
         getmaxyx(stdscr, h, w);
+        (void)h; /* unused arg. */
         w -= 10;
         text = (char *) xmalloc((w * 3) + 16);
         if (snprintf(text, w, "%s", component) > (w-4))
-- 
2.20.1