Fix parsing of some key lists

It seems some still want you to read the interpolation type even when there's
no keys.

components/nif/data.hpp

@@ -394,9 +394,9 @@ struct NiMorphData : public Record
         nif->getChar();
 
         mMorphs.resize(morphCount);
-        for(int i=0; i<morphCount; i++)
+        for(int i = 0;i < morphCount;i++)
         {
-            mMorphs[i].mData.read(nif);
+            mMorphs[i].mData.read(nif, true);
 
             mMorphs[i].mVertices.resize(vertCount);
             for(int j = 0;j < vertCount;j++)

components/nif/nif_file.hpp

@@ -263,10 +263,11 @@ struct KeyListT {
     int mInterpolationType;
     VecType mKeys;
 
-    void read(NIFFile *nif)
+    void read(NIFFile *nif, bool force=false)
     {
         size_t count = nif->getInt();
-        if(count == 0) return;
+        if(count == 0 && !force)
+            return;
 
         mInterpolationType = nif->getInt();
         mKeys.resize(count);