patch 8.1.2154: quickfix window height wrong when there is a tabline

Problem:    Quickfix window height wrong when there is a tabline. (Daniel
            Hahler)
Solution:   Take the tabline height into account. (closes #5058)
diff --git a/src/quickfix.c b/src/quickfix.c
index 136c472..36456ed 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -4046,8 +4046,8 @@
 	    if (sz != win->w_width)
 		win_setwidth(sz);
 	}
-	else if (sz != win->w_height
-			 && win->w_height + win->w_status_height < cmdline_row)
+	else if (sz != win->w_height && win->w_height
+		       + win->w_status_height + tabline_height() < cmdline_row)
 	    win_setheight(sz);
     }