Fix issue with 'Modification of non-creatable hash value attempted, subscript "cwd" at ...pm line 234.'
http://search.cpan.org/~dapm/perl-5.10.1/pod/perlguts.pod#AVs,_HVs_and_undefined_values
	modified:   ProcessTable.xs
change length in test case as we already change read buffer from 20 to 1024 in
https://github.com/jwbargsten/perl-proc-processtable/commit/7a44974b702c836db639b78f4ff5967ff2d61b92
	renamed:    t/bugfix-51470_cmndline_mod20_error.t -> t/bugfix-51470_cmndline_mod_error.t
	modified:   t/bugfix-51470_cmndline_mod_error.t
Merge pull request #6 from wangvisual/master

Merged pull request from 'wangvisual'