patch 8.2.3115: Coverity complains about free_wininfo() use

Problem:    Coverity complains about free_wininfo() use.
Solution:   Add a condition that "wip2" is not equal to "wip". (Neovim #14996)
diff --git a/src/version.c b/src/version.c
index 7dfbe6d..e2f74e9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3115,
+/**/
     3114,
 /**/
     3113,
diff --git a/src/window.c b/src/window.c
index 09067b0..cc9c217 100644
--- a/src/window.c
+++ b/src/window.c
@@ -5057,8 +5057,9 @@
 
 		// If there already is an entry with "wi_win" set to NULL it
 		// must be removed, it would never be used.
+		// Skip "wip" itself, otherwise Coverity complains.
 		for (wip2 = buf->b_wininfo; wip2 != NULL; wip2 = wip2->wi_next)
-		    if (wip2->wi_win == NULL)
+		    if (wip2 != wip && wip2->wi_win == NULL)
 		    {
 			if (wip2->wi_next != NULL)
 			    wip2->wi_next->wi_prev = wip2->wi_prev;