patch 8.1.1717: last char in menu popup window highlighted

Problem:    Last char in menu popup window highlighted.
Solution:   Do not highlight an extra character twice.
diff --git a/src/screen.c b/src/screen.c
index fdb1e0a..5cffdf1 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -3219,10 +3219,10 @@
     int		syntax_attr = 0;	/* attributes desired by syntax */
     int		has_syntax = FALSE;	/* this buffer has syntax highl. */
     int		save_did_emsg;
-    int		eol_hl_off = 0;		/* 1 if highlighted char after EOL */
     int		draw_color_col = FALSE;	/* highlight colorcolumn */
     int		*color_cols = NULL;	/* pointer to according columns array */
 #endif
+    int		eol_hl_off = 0;		/* 1 if highlighted char after EOL */
 #ifdef FEAT_TEXT_PROP
     int		text_prop_count;
     int		text_prop_next = 0;	// next text property to use
@@ -5557,11 +5557,11 @@
 	/*
 	 * At end of the text line or just after the last character.
 	 */
-	if (c == NUL
+	if ((c == NUL
 #if defined(LINE_ATTR)
 		|| did_line_attr == 1
 #endif
-		)
+		) && eol_hl_off == 0)
 	{
 #ifdef FEAT_SEARCH_EXTRA
 	    long prevcol = (long)(ptr - line) - (c == NUL);
@@ -5687,9 +5687,7 @@
 		    ++off;
 		}
 		++vcol;
-#ifdef FEAT_SYN_HL
 		eol_hl_off = 1;
-#endif
 	    }
 	}