Re: [Libvir] Remove useless "if (foo)" before "free (foo)".

Likewise, given if (foo != NULL) free (foo); remove the useless "if" test. Do the same for sexpr_free, since it has similar semantics. Detect with this: (-0x3b tells Perl to use ';' as the input record separator) perl -0x3b -ne '/\b(if \((.+?)(?:\s*!=\s*NULL\s*)?\)\s+(sexpr_)?free *\(\2\))/s and print "$ARGV: $1\n"'\ $(git ls-files) Note that it also changes the code produced by generator.py. This is just a heads-up. Before committing it, I will add a rule using something like the above to help avoid regressions. BTW, there is some very misleading indentation in the vicinity of some of these changes, but I didn't correct any of that.