ESM: Make sure to clear old list when a list is overwritten by another content file (Fixes #1932)

components/esm/aipackage.cpp

@@ -13,6 +13,7 @@ namespace ESM
 
     void AIPackageList::load(ESMReader &esm)
     {
+        mList.clear();
         while (esm.hasMoreSubs()) {
             // initialize every iteration
             AIPackage pack;

components/esm/effectlist.cpp

@@ -7,6 +7,7 @@ namespace ESM {
 
 void EffectList::load(ESMReader &esm)
 {
+    mList.clear();
     ENAMstruct s;
     while (esm.isNextSub("ENAM")) {
         esm.getHT(s, 24);

components/esm/loadarmo.cpp

@@ -9,6 +9,7 @@ namespace ESM
 
 void PartReferenceList::load(ESMReader &esm)
 {
+    mParts.clear();
     while (esm.isNextSub("INDX"))
     {
         PartReference pr;

components/esm/loadcont.cpp

@@ -9,6 +9,7 @@ namespace ESM
 
 void InventoryList::load(ESMReader &esm)
 {
+    mList.clear();
     ContItem ci;
     while (esm.isNextSub("NPCO"))
     {

components/esm/loadnpc.cpp

@@ -51,6 +51,7 @@ void NPC::load(ESMReader &esm)
     else
         mHasAI = false;
 
+    mTransport.clear();
     while (esm.isNextSub("DODT") || esm.isNextSub("DNAM")) {
         if (esm.retSubName() == 0x54444f44) { // DODT struct
             Dest dodt;

components/esm/loadpgrd.cpp

@@ -27,6 +27,9 @@ void Pathgrid::load(ESMReader &esm)
     esm.getHNT(mData, "DATA", 12);
     mCell = esm.getHNString("NAME");
 
+    mPoints.clear();
+    mEdges.clear();
+
     // keep track of total connections so we can reserve edge vector size
     int edgeCount = 0;
 

components/esm/loadregn.cpp

@@ -39,6 +39,7 @@ void Region::load(ESMReader &esm)
 
     esm.getHNT(mMapColor, "CNAM");
 
+    mSoundList.clear();
     while (esm.hasMoreSubs())
     {
         SoundRef sr;

components/esm/loadscpt.cpp

@@ -22,6 +22,8 @@ void Script::load(ESMReader &esm)
     mData = data.mData;
     mId = data.mName.toString();
 
+    mVarNames.clear();
+
     // List of local variables
     if (esm.isNextSub("SCVR"))
     {

components/esm/spelllist.cpp

@@ -7,6 +7,7 @@ namespace ESM {
 
 void SpellList::load(ESMReader &esm)
 {
+    mList.clear();
     while (esm.isNextSub("NPCS")) {
         mList.push_back(esm.getHString());
     }