testsuite: Fix up gcc.target/aarch64/pr112406.c for modern C [PR112406]

testsuite: Fix up gcc.target/aarch64/pr112406.c for modern C [PR112406]

On Fri, Nov 17, 2023 at 02:04:01PM +0100, Robin Dapp wrote:
> > Yes, your version is also OK.
>
> The attached was bootstrapped and regtested on aarch64, x86 and
> regtested on riscv.  Going to commit it later unless somebody objects.

Unfortunately the aarch64/pr112406.c was reduced too much and is rejected
since the switch to modern C patchset.

The following patch fixes that, I've verified the testcase
before/after the changes still ICEs in r14-5563 and doesn't with
r14-5564 and after the changes compiles fine with even latest trunk.
Everything admittedly with a cross-compiler, but that shouldn't change
anything.

Note, one of the modern C changes is that at least when people use
cvise/creduce/delta scripts which ensure no further errors are introduced
during the reduction then expected originally such reductions will not
appear anymore.

2023-12-03  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/112406
	* gcc.target/aarch64/pr112406.c (MagickPixelPacket): Add missing
	semicolon.
	(GetImageChannelMoments_image): Avoid using implicit int.
	(SetMagickPixelPacket): Use void return type instead of implicit int.
	(GetImageChannelMoments): Likewise.  Use __builtin_atan instead of
	atan.