uninitialized data in t-test-alpha.sh

[Ben Pfaff]

I'm seeing the following warning from valgrind on
t-test-alpha.sh:

==4900== Conditional jump or move depends on uninitialised value(s)
==4900==    at 0x80CF84F: casefilter_variable_missing (casefilter.c:63)
==4900==    by 0x809EEFD: calculate (t-test.q:1427)
==4900==    by 0x80DD04C: multipass_split_output (procedure.c:656)
==4900==    by 0x80DD0BE: multipass_split_end_func (procedure.c:647)
==4900==    by 0x80DD5DC: internal_procedure (procedure.c:238)
==4900==    by 0x80DDA1B: multipass_procedure_with_splits (procedure.c:609)
==4900==    by 0x80A014F: cmd_t_test (t-test.q:343)
==4900==    by 0x804F86E: cmd_parse (command.c:206)
==4900==    by 0x804D766: main (main.c:120)
==4900== 
==4900== Conditional jump or move depends on uninitialised value(s)
==4900==    at 0x80CF851: casefilter_variable_missing (casefilter.c:63)
==4900==    by 0x809EEFD: calculate (t-test.q:1427)
==4900==    by 0x80DD04C: multipass_split_output (procedure.c:656)
==4900==    by 0x80DD0BE: multipass_split_end_func (procedure.c:647)
==4900==    by 0x80DD5DC: internal_procedure (procedure.c:238)
==4900==    by 0x80DDA1B: multipass_procedure_with_splits (procedure.c:609)
==4900==    by 0x80A014F: cmd_t_test (t-test.q:343)
==4900==    by 0x804F86E: cmd_parse (command.c:206)
==4900==    by 0x804D766: main (main.c:120)
==4900== 
==4900== Conditional jump or move depends on uninitialised value(s)
==4900==    at 0x80CF84F: casefilter_variable_missing (casefilter.c:63)
==4900==    by 0x809F3FC: calculate (t-test.q:1708)
==4900==    by 0x80DD04C: multipass_split_output (procedure.c:656)
==4900==    by 0x80DD0BE: multipass_split_end_func (procedure.c:647)
==4900==    by 0x80DD5DC: internal_procedure (procedure.c:238)
==4900==    by 0x80DDA1B: multipass_procedure_with_splits (procedure.c:609)
==4900==    by 0x80A014F: cmd_t_test (t-test.q:343)
==4900==    by 0x804F86E: cmd_parse (command.c:206)
==4900==    by 0x804D766: main (main.c:120)
==4900== 
==4900== Conditional jump or move depends on uninitialised value(s)
==4900==    at 0x80CF851: casefilter_variable_missing (casefilter.c:63)
==4900==    by 0x809F3FC: calculate (t-test.q:1708)
==4900==    by 0x80DD04C: multipass_split_output (procedure.c:656)
==4900==    by 0x80DD0BE: multipass_split_end_func (procedure.c:647)
==4900==    by 0x80DD5DC: internal_procedure (procedure.c:238)
==4900==    by 0x80DDA1B: multipass_procedure_with_splits (procedure.c:609)
==4900==    by 0x80A014F: cmd_t_test (t-test.q:343)
==4900==    by 0x804F86E: cmd_parse (command.c:206)
==4900==    by 0x804D766: main (main.c:120)

John, I think that this is your code, so I'll give you first stab
at it.
-- 
"Note that nobody reads every post in linux-kernel.   In fact, nobody who
 expects to have time left over to  actually do any real kernel work will
 read even half.  Except Alan Cox, but he's actually not human, but about
 a thousand gnomes working in under-ground caves in Swansea." --Linus