(a missing fclose was the reason for T2247)

Added fclose in an appropriate place in mitkParRecFileReader.cpp.

There does not seem to be a test, so I'll ask the author what the file does and how to test it.

(change committed in rev. #18172)

Fixed syntax error in rev. 18178

The mentioned ParRecFileReader is good for reading some special kind of MRI data. Ivo pointed me to example data, which I could load successfully. So I assume that the reader is still working as before.

This closes the bug, since I found no further fopens in open source MITK code.