Missing const, thanks to jeaye

apps/openmw/mwgui/spellicons.cpp

@@ -120,7 +120,7 @@ namespace MWGui
                     MWBase::Environment::get().getWorld ()->getStore ().get<ESM::MagicEffect>().find(effectIt->mEffectID);
 
                 MagicEffectInfo effectInfo;
-                if (it->second.mName != "")
+                if (!it->second.mName.empty())
                     effectInfo.mSource = it->second.mName;
                 else
                     effectInfo.mSource = getSpellDisplayName(it->first);

apps/openmw/mwmechanics/creaturestats.cpp

@@ -343,9 +343,9 @@ namespace MWMechanics
         return mLastHitObject;
     }
 
-    bool CreatureStats::canUsePower(const std::string &power)
+    bool CreatureStats::canUsePower(const std::string &power) const
     {
-        std::map<std::string, MWWorld::TimeStamp>::iterator it = mUsedPowers.find(power);
+        std::map<std::string, MWWorld::TimeStamp>::const_iterator it = mUsedPowers.find(power);
         if (it == mUsedPowers.end() || it->second + 24 <= MWBase::Environment::get().getWorld()->getTimeStamp())
             return true;
         else

apps/openmw/mwmechanics/creaturestats.hpp

@@ -49,7 +49,7 @@ namespace MWMechanics
     public:
         CreatureStats();
 
-        bool canUsePower (const std::string& power);
+        bool canUsePower (const std::string& power) const;
         void usePower (const std::string& power);
 
         const Stat<int> & getAttribute(int index) const;

apps/openmw/mwworld/worldimp.cpp

@@ -2030,7 +2030,7 @@ namespace MWWorld
         stats.setAttackingOrSpell(false);
 
         std::string selectedSpell = stats.getSpells().getSelectedSpell();
-        std::string sourceName = "";
+        std::string sourceName;
         if (!selectedSpell.empty())
         {
             const ESM::Spell* spell = getStore().get<ESM::Spell>().search(selectedSpell);