Fix null character issue in ESMReader::getString

components/esm/esmreader.cpp

@@ -299,8 +299,7 @@ std::string ESMReader::getString(int size)
     char *ptr = &mBuffer[0];
     getExact(ptr, size);
 
-    if (size>0 && ptr[size-1]==0)
-        --size;
+    size = strnlen(ptr, size);
 
     // Convert to UTF8 and return
     if (mEncoder)