patch 8.2.1909: number of status line items is limited to 80

Problem:    Number of status line items is limited to 80.
Solution:   Dynamically allocate the arrays. (Rom Grk, closes #7181)
diff --git a/src/screen.c b/src/screen.c
index 233d6a5..0b117cd 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -1196,8 +1196,8 @@
     char_u	buf[MAXPATHL];
     char_u	*stl;
     char_u	*p;
-    struct	stl_hlrec hltab[STL_MAX_ITEM];
-    struct	stl_hlrec tabtab[STL_MAX_ITEM];
+    stl_hlrec_T *hltab;
+    stl_hlrec_T *tabtab;
     int		use_sandbox = FALSE;
     win_T	*ewp;
     int		p_crb_save;
@@ -1287,7 +1287,7 @@
     stl = vim_strsave(stl);
     width = build_stl_str_hl(ewp, buf, sizeof(buf),
 				stl, use_sandbox,
-				fillchar, maxwidth, hltab, tabtab);
+				fillchar, maxwidth, &hltab, &tabtab);
     vim_free(stl);
     ewp->w_p_crb = p_crb_save;