patch 8.2.3112: in rare cases the cursor may be somewhere in a folded line

Problem:    With concealing enabled and indirectly closing a fold the cursor
            may be somewhere in a folded line when it is not on the first line
            of the fold.
Solution:   Check if he cursor is somewhere in the folded text.

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3112,
 /**/
     3111,
 /**/