i_video: fix an if condition in my previous commit

`else if (f == 'w')` doesn't really secure itself against
uninitialized memory, it still needs to test that `s == 3`.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/i_video.c b/src/i_video.c
index b7175db3..242f3ac5 100644
--- a/src/i_video.c
+++ b/src/i_video.c
@@ -1714,7 +1714,7 @@ void I_GraphicsCheckCommandLine(void)
             {
                 fullscreen = true;
             }
-            else if (f == 'w')
+            else if (s == 3 && f == 'w')
             {
                 fullscreen = false;
             }