patch 8.0.0812: terminal window colors shift when 'number' is set

Problem:    Terminal window colors shift when 'number' is set. (Nazri Ramliy)
Solution:   Use vcol instead of col.

Author: brammool

src/screen.c

@@ -4541,7 +4541,7 @@ win_line(
 #ifdef FEAT_TERMINAL
 		if (get_term_attr)
 		{
-		    syntax_attr = term_get_attr(wp->w_buffer, lnum, col);
+		    syntax_attr = term_get_attr(wp->w_buffer, lnum, vcol);
 
 		    if (!attr_pri)
 			char_attr = syntax_attr;

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    812,
 /**/
     811,
 /**/