Attempts to fix #6226

Kind of a hack. A proper fix would look at how humans produce heat.

code/game/machinery/cryo.dm

@@ -1,3 +1,5 @@
+#define HEAT_CAPACITY_HUMAN 24984 //249840 J/K, for a 72 kg person. Making this one-tenth of that as a quick workaround for cryo not cooling people enough.
+
 /obj/machinery/atmospherics/unary/cryo_cell
 	name = "cryo cell"
 	icon = 'icons/obj/cryogenics.dmi'

code/setup.dm

@@ -42,7 +42,6 @@
 #define WARNING_LOW_PRESSURE 50 	//This is when the gray low pressure icon is displayed. (it is 2.5 * HAZARD_LOW_PRESSURE)
 #define HAZARD_LOW_PRESSURE 20		//This is when the black ultra-low pressure icon is displayed. (This one is set as a constant)
 
-#define HEAT_CAPACITY_HUMAN 249840	//J/K, for a 72 kg person. Only used by cryo at the moment, perhaps it will be used for environment effect on body temperature in the future.
 #define TEMPERATURE_DAMAGE_COEFFICIENT 1.5	//This is used in handle_temperature_damage() for humans, and in reagents that affect body temperature. Temperature damage is multiplied by this amount.
 #define BODYTEMP_AUTORECOVERY_DIVISOR 12 //This is the divisor which handles how much of the temperature difference between the current body temperature and 310.15K (optimal temperature) humans auto-regenerate each tick. The higher the number, the slower the recovery. This is applied each tick, so long as the mob is alive.
 #define BODYTEMP_AUTORECOVERY_MINIMUM 1 //Minimum amount of kelvin moved toward 310.15K per tick. So long as abs(310.15 - bodytemp) is more than 50.