patch 9.1.0759: screenpos() may return invalid position

Problem:  screenpos() may return invalid position
          after switching buffers (Greg Hurrell)
Solution: reset w_leftcol if wrapping has been set
          after copying wrap option

fixes: #15792
closes: #15803

Signed-off-by: Christian Brabandt <cb@256bit.org>

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    759,
 /**/
     758,
 /**/