Signedness fixes

apps/openmw/mwworld/esmstore.cpp

@@ -169,8 +169,8 @@ void ESMStore::validate()
             if (!fact)
             {
                 Log(Debug::Verbose) << "NPC '" << npc.mId << "' (" << npc.mName << ") has nonexistent faction '" << npc.mFaction << "', ignoring it.";
-                npc.mFaction = "";
+                npc.mFaction.clear();
-                npc.mNpdt.mRank = -1;
+                npc.mNpdt.mRank = 0;
                 changed = true;
             }
         }

components/esm/loadclot.hpp

@@ -40,7 +40,7 @@ struct Clothing
         int mType;
         float mWeight;
         unsigned short mValue;
-        short mEnchant;
+        unsigned short mEnchant;
     };
     CTDTstruct mData;
 

components/esm/loadweap.hpp

@@ -59,7 +59,7 @@ struct Weapon
         short mType;
         unsigned short mHealth;
         float mSpeed, mReach;
-        short mEnchant; // Enchantment points. The real value is mEnchant/10.f
+        unsigned short mEnchant; // Enchantment points. The real value is mEnchant/10.f
         unsigned char mChop[2], mSlash[2], mThrust[2]; // Min and max
         int mFlags;
     }; // 32 bytes