patch 8.0.0083

Problem:    Using freed memory with win_getid(). (Domenique Pelle)
Solution:   For the current tab use curwin.

Author: brammool

src/testdir/test_window_id.vim

@@ -92,3 +92,12 @@ func Test_win_getid()
 
   only!
 endfunc
+
+func Test_win_getid_curtab()
+  tabedit X
+  tabfirst
+  copen
+  only
+  call assert_equal(win_getid(1), win_getid(1, 1))
+  tabclose!
+endfunc

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    83,
 /**/
     82,
 /**/

src/window.c

@@ -7133,7 +7133,10 @@ win_getid(typval_T *argvars)
 		    break;
 	    if (tp == NULL)
 		return -1;
-	    wp = tp->tp_firstwin;
+	    if (tp == curtab)
+		wp = firstwin;
+	    else
+		wp = tp->tp_firstwin;
 	}
 	for ( ; wp != NULL; wp = wp->w_next)
 	    if (--winnr == 0)