Tweak r3681 to obtain the same behavior in the pre-r3681 undefined behavior case.

That is, assume that switch(DYNAMICTILEMAP(-1)) (which is an oob access and thus
undefined behavior) gets us to the 'default:' label.

git-svn-id: https://svn.eduke32.com/eduke32@3743 1a8010ca-5511-0410-912e-c29ae57300e0

polymer/eduke32/source/actors.c

@@ -1977,8 +1977,9 @@ ACTOR_STATIC void G_MoveStandables(void)
                 t[1] = s->ang;
 
                 k = A_IncurDamage(i);
+                if (k < 0)
+                    goto crack_default;
 
-                if (k >= 0)
                 switch (DYNAMICTILEMAP(k))
                 {
                 case FIREEXT__STATIC:
@@ -1995,6 +1996,7 @@ ACTOR_STATIC void G_MoveStandables(void)
 
                     goto DETONATE;
 
+                crack_default:
                 default:
                     s->cstat = t[0];
                     s->ang = t[1];

polymer/eduke32/source/actors.h

@@ -224,8 +224,8 @@ enum sflags_t {
     SPRITE_DIDNOSE7WATER    = 0x00080000, // used temporarily
 };
 
-// custom projectiles
-// KEEPINSYNC lunatic/con_lang.lua
+// Custom projectiles "workslike" flags.
+// XXX: Currently not predefined from CON.
 enum pflags_t {
     PROJECTILE_HITSCAN             = 0x00000001,
     PROJECTILE_RPG                 = 0x00000002,