patch 8.0.1135: W_WINCOL() is always the same

Problem:    W_WINCOL() is always the same.
Solution:   Expand the macro.
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index dbdd403..adf4279 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -9111,7 +9111,7 @@
     {
 	n = W_WINROW(curwin) + curwin->w_wrow - msg_scrolled;
 	if (n >= 0)
-	    windgoto((int)n, W_WINCOL(curwin) + curwin->w_wcol);
+	    windgoto((int)n, curwin->w_wincol + curwin->w_wcol);
     }
 
     len = eap->line2;