[Fix] Some fixes for missions 4 and 5.

dat/missions/emp_collective03.lua

@@ -75,6 +75,8 @@ end
 
 -- Handle arrival back to base.
 function land()
+  planet = space.getPlanet()
+
   if misn_stage == 1 and planet == misn_base then
     tk.msg(title[2], text[4])
 

dat/missions/emp_collective04.lua

@@ -31,7 +31,7 @@ else -- Default english.
 end
 
 function create()
-  misn_target, misn_target_sys = sapce.getSystem("Eiroik")
+  misn_target, misn_target_sys = sapce.getPlanet("Eiroik")
 
   -- Intro text.
   if tk.yesno(title[1], string.format(text[1], misn_target:name())) then