create project file when saving content file

components/esm/esmwriter.cpp

@@ -38,6 +38,11 @@ namespace ESM
         mHeader.mFormat = format;
     }
 
+    void ESMWriter::clearMaster()
+    {
+        mHeader.mMaster.clear();
+    }
+
     void ESMWriter::addMaster(const std::string& name, uint64_t size)
     {
         Header::MasterData d;

components/esm/esmwriter.hpp

@@ -32,6 +32,8 @@ class ESMWriter
         void setRecordCount (int count);
         void setFormat (int format);
 
+        void clearMaster();
+
         void addMaster(const std::string& name, uint64_t size);
 
         void save(const std::string& file);

components/esm/loadtes3.cpp

@@ -14,6 +14,7 @@ void ESM::Header::blank()
     mData.desc.assign ("");
     mData.records = 0;
     mFormat = CurrentFormat;
+    mMaster.clear();
 }
 
 void ESM::Header::load (ESMReader &esm)