Reverted part of 60a88a08f5

All 8 bytes must be read from file to match output from vmap4extractor

src/server/collision/Maps/TileAssembler.cpp

@@ -498,10 +498,9 @@ namespace VMAP
         }
 
         char ident[8];
-        ident[7] = 0;
         int readOperation = 0;
 
-        READ_OR_RETURN(&ident, 7);
+        READ_OR_RETURN(&ident, 8);
         CMP_OR_RETURN(ident, RAW_VMAP_MAGIC);
 
         // we have to read one int. This is needed during the export and we have to skip it here