Dwarvish Guardsman line balancing changes

data/units/Dwarvish_Guardsman.cfg

@@ -21,6 +21,11 @@ cost=19
 usage=fighter
 unit_description= _ "The most resilient dwarves sometimes join the Dwarvish army as Guardsman. Slow and without a strong attack, they guard the Army's flank, soaking up a lot of damage, and hurling their heavy spears into the enemy."
 get_hit_sound=groan.wav
+
+	[resistance]
+	cold=110
+	[/resistance]
+
 	[attack]
 	name=spear
 	icon=attacks/spear.png

data/units/Dwarvish_Sentinel.cfg

@@ -23,6 +23,11 @@ cost=37
 usage=fighter
 unit_description= _ "The Sentinel, with his tower shield and great courage, refuses to yield under even the strongest of enemy attacks."
 get_hit_sound=groan.wav
+
+	[resistance]
+	cold=110
+	[/resistance]
+
 	[attack]
 	name=spear
 	icon=attacks/spear.png

data/units/Dwarvish_Stalwart.cfg

@@ -4,10 +4,10 @@ name= _ "Dwarvish Stalwart"
 race=dwarf
 image="dwarf-stalwart.png"
 image_defensive="dwarf-stalwart-defend.png"
-hitpoints=37
+hitpoints=39
 movement_type=dwarvishfoot
     [defense]
-    grassland=50
+    grassland=60
     mountains=40
     village=40
     hills=50
@@ -23,6 +23,11 @@ cost=33
 usage=fighter
 unit_description= _ "Stalwarts, after years in battle, have fashioned new shields and strong armor from the ruins of their enemies. While slow, they are the feared for their resilience and strength."
 get_hit_sound=groan.wav
+
+	[resistance]
+	cold=110
+	[/resistance]
+
 	[attack]
 	name=spear
 	icon=attacks/spear.png