exactness: close file we opened

We only opened it read only, but this should still be closed before
leaving.

CID: 1419853

Reviewed-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Differential Revision: https://phab.enlightenment.org/D11412

src/bin/exactness/exactness.c

@@ -401,6 +401,7 @@ _list_file_load(const char *filename)
               List_Entry);
      }
 
+   fclose(file);
    return ret;
 }