fix remaining vulcan-family bug

vacuum_gambit.p8

@@ -845,7 +845,7 @@ vulcan_p = vulcan_e.new{
  dy = -4,
  category=player_blt_cat
 }
-mknew(vulcan_e)
+mknew(vulcan_p)
 
 vulcan_gun_e = gun_base.new{
  icon = 37,
@@ -854,7 +854,7 @@ vulcan_gun_e = gun_base.new{
  cooldown = 0x0.0002, -- frames between shots
  ammo = nil,
  maxammo = nil,
- munition=vulcan_p,
+ munition=vulcan_e,
  dxs = {0.35, -0.35, -0.7, 0.7, 0.35, -0.35},
  xoffs = {1, 0, -1, 1, 0, -1},
  dxidx = 1,
@@ -872,6 +872,7 @@ mknew(vulcan_gun_e)
 vulcan_gun_p = vulcan_gun_e.new{
  munition=vulcan_p,
 }
+mknew(vulcan_gun_p)
 
 -->8
 --ships, including player