[RISCV] Fix boundary error in compress-opt-select.ll

Per the comment, this test is intending to test the first constant which
can't be encoded via a c.addi.  However, -32 *can* be encoded as in a
c.addi, and all that's preventing it from doing so is the register
allocators choice to use a difference destination register on the
add than it's source.  (Which compressed doesn't support.)

The current LLC codegen for this test looks like:

	addi	a1, a0, -32
	li	a0, -99
	bnez	a1, .LBB0_2
	li	a0, 42
.LBB0_2:
	ret

After https://github.com/llvm/llvm-project/pull/108889, we sink the LI, and
the register allocator picks the same source and dest register for the addi
resulting in the c.addi form being emitted.  So, to avoid a confusing diff
let's fix the test to check what was originally intended.

0 files changed, 0 insertions, 0 deletions