This fixes a tiny memory leak caused by not freeing the copy

of a variable if used in a comparison on the left side, valgrind output:

==10477== 10 bytes in 1 blocks are definitely lost in loss record 3 of 45
==10477==    at 0x1B90459D: malloc (vg_replace_malloc.c:130)
==10477==    by 0x806B08A: ptrdup2 (ptr.c:65)
==10477==    by 0x806B121: ptrdup (ptr.c:80)
==10477==    by 0x805C503: exe_op (eval.c:675)
==10477==    by 0x805DDCF: compare_and_unload (eval.c:1279)
==10477==    by 0x805DFBA: _eval (eval.c:1322)
==10477==    by 0x805E0D4: eval_any (eval.c:1362)
==10477==    by 0x805E43C: evall (eval.c:1446)
==10477==    by 0x8052514: cmd_if (cmd.c:1884)
==10477==    by 0x806536E: parse_commands (main.c:1769)
==10477==    by 0x8065119: parse_instruction (main.c:1709)
==10477==    by 0x806525F: parse_user_input (main.c:1735)

test file:

#( "Don't save the config file every time" )
#file =

#if ($foo > "ho" ) #print Dwarves
#if ($foo > "ho" ) #print Dwarves
#if ($foo > "ho" ) #print Dwarves

0 files changed, 0 insertions, 0 deletions