battleman.py: Avoid getting stuck in input loop when adding conditions or using recharge powers

battleman.py

@@ -150,6 +150,10 @@ class Combatant():
 
 
     def choose_condition(self):
+        if not len(self.conditions):
+            print '{} has no conditions.'.format(self)
+            return None
+
         print self.format_condition_summary()
         index = input_int('choice')
 
@@ -296,6 +300,10 @@ class Combatant():
 
 
     def choose_recharge_power(self):
+        if not len(self.recharges):
+            print '{} has no rechargable powers.'.format(self)
+            return None
+
         print self.format_recharge_summary()
         index = input_int('choice')
 
@@ -749,8 +757,12 @@ def do_remove_condition(data):
     if len(data) >= 2:
         index = int(data[1])
     else:
-        index = c.choose_condition()['index']
+        cond = c.choose_condition()
+        index = None
+        if cond:
+            index = cond['index']
 
+    if index != None:
         c.remove_condition(index)
 
 
@@ -767,8 +779,12 @@ def do_use_recharge_power(data):
     if len(data) >= 2:
         index = int(data[1])
     else:
-        index = c.choose_recharge_power()['index']
+        r = c.choose_recharge_power()
+        index = None
+        if r:
+            index = r['index']
 
+    if index != None:
         c.use_recharge_power(index)