[BUGFIX] Incorrect count of argument with rescue parser

This patch fixes the parsing of two strings like following ones:
"echo 1 " was parsed into "echo", "1", ""
"echo $root" was parsed into "echo" (variable just disappeared)

-- 
Regards
Vladimir 'phcoder' Serbinenko

Personal git repository: http://repo.or.cz/w/grub2/phcoder.git

argcfix.diff
Description: Text document

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