fixed disappearing returns

[XdotCore]

Description

This fixes issue #1456 caused by pr #1191. This issue occurred because the pr would remove any exit instruction that wasn't followed by an operation starting with push int, which removed simple return;s that didn't meet that req because they compile to exit (while return value; compiles to ret). Thanks to @Jacky720 for a better way than my initial solution in #1680

Caveats

Haven't done proper testing

Notes

N/A

[Jacky720]

This also resolves #1223 (and maybe some more, we have a big issues backlog).

[Miepee]

Can someone test this please?

[Dobby233Liu]

Can someone test this please?

Scuffed test

Before PR: 4cb37e6
After PR: Dobby233Liu@fc11913

In DR Ch 1&2 v1.10 (2022.1),

1. Open gml_GlobalScript_scr_create_hitbox_solid, insert right after start of body

   if global.darkzone != 1 return;

   • Before PR: compiles to

      if ((global.darkzone != true))
      {
      }

   • After PR: compiles to

      if ((global.darkzone != true))
          return;

2. Open gml_Object_o_boxingflame_Create_0, insert before line 1

   if (instance_exists(o_boxingqueen) == 0) return;

   • Before PR: compiles to

      if ((instance_exists(o_boxingqueen) == 0))
      	return;

   • After PR: compiles to

      if ((instance_exists(o_boxingqueen) == 0))
          return;

With ULCA Deltarune skit program which is 2023.1 ,

1. Open gml_Object_obj_event_anxietyrealized_Create_0, and insert before line 1

   if global.chapter != 3 { exit; }

   • Before PR: compiles to

     if ((global.chapter != 3))
         return;

   • After PR: compiles to

     if ((global.chapter != 3))
         return;

2. Open gml_GlobalScript_scr_mercyadd, insert right after start of body

   if !global.darkzone exit;

   • Before PR: compiles to

      if (!global.darkzone)
          return;

   • After PR: compiles to

     if (!global.darkzone)
        return;

[Miepee]

ty, probably is good then