Blocked revisions 62015 via svnmerge

This was apparently fixed in r54428 already
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  r62015 | amaury.forgeotdarc | 2008-03-28 21:30:50 +0100 (Fr, 28 Mär 2008) | 5 lines

  Fix a reference leak found by Georg, when compiling a class nested in another class.
  Now "regrtest.py -R:: test_compile" is satisfied.

  Will backport.
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