Ensure screenNum is always initialized

Clears this warning from clang, even though it seems like a
false positive, as all the uses are behind the same conditions:

xdriinfo.c:117:27: warning: variable 'screenNum' may be uninitialized
  when used here [-Wconditional-uninitialized]
    if (func == DRIVER && screenNum == -1) {
                          ^~~~~~~~~
xdriinfo.c:61:28: note: initialize the variable 'screenNum' to silence
  this warning
    int nScreens, screenNum;

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

0 files changed, 0 insertions, 0 deletions