patch 8.2.0098: exe stack length can be wrong without being detected

Problem:    Exe stack length can be wrong without being detected.
Solution:   Add a check when ABORT_ON_INTERNAL_ERROR is defined.
diff --git a/src/main.c b/src/main.c
index 51b8970..117c207 100644
--- a/src/main.c
+++ b/src/main.c
@@ -3086,16 +3086,19 @@
     char_u	**cmds = parmp->pre_commands;
     int		cnt = parmp->n_pre_commands;
     int		i;
+    ESTACK_CHECK_DECLARATION
 
     if (cnt > 0)
     {
 	curwin->w_cursor.lnum = 0; // just in case..
 	estack_push(ETYPE_ARGS, (char_u *)_("pre-vimrc command line"), 0);
+	ESTACK_CHECK_SETUP
 # ifdef FEAT_EVAL
 	current_sctx.sc_sid = SID_CMDARG;
 # endif
 	for (i = 0; i < cnt; ++i)
 	    do_cmdline_cmd(cmds[i]);
+	ESTACK_CHECK_NOW
 	estack_pop();
 # ifdef FEAT_EVAL
 	current_sctx.sc_sid = 0;
@@ -3111,6 +3114,7 @@
 exe_commands(mparm_T *parmp)
 {
     int		i;
+    ESTACK_CHECK_DECLARATION
 
     /*
      * We start commands on line 0, make "vim +/pat file" match a
@@ -3121,6 +3125,7 @@
     if (parmp->tagname == NULL && curwin->w_cursor.lnum <= 1)
 	curwin->w_cursor.lnum = 0;
     estack_push(ETYPE_ARGS, (char_u *)"command line", 0);
+    ESTACK_CHECK_SETUP
 #ifdef FEAT_EVAL
     current_sctx.sc_sid = SID_CARG;
     current_sctx.sc_seq = 0;
@@ -3131,6 +3136,7 @@
 	if (parmp->cmds_tofree[i])
 	    vim_free(parmp->commands[i]);
     }
+    ESTACK_CHECK_NOW
     estack_pop();
 #ifdef FEAT_EVAL
     current_sctx.sc_sid = 0;
@@ -3340,12 +3346,14 @@
 #ifdef FEAT_EVAL
     sctx_T	save_current_sctx;
 #endif
+    ESTACK_CHECK_DECLARATION
 
     if ((initstr = mch_getenv(env)) != NULL && *initstr != NUL)
     {
 	if (is_viminit)
 	    vimrc_found(NULL, NULL);
 	estack_push(ETYPE_ENV, env, 0);
+	ESTACK_CHECK_SETUP
 #ifdef FEAT_EVAL
 	save_current_sctx = current_sctx;
 	current_sctx.sc_sid = SID_ENV;
@@ -3355,6 +3363,7 @@
 #endif
 	do_cmdline_cmd(initstr);
 
+	ESTACK_CHECK_NOW
 	estack_pop();
 #ifdef FEAT_EVAL
 	current_sctx = save_current_sctx;