#93 Fix tests on OpenBSD

[Anthony J. Bentley]

When check.sh was modified to run ngspice/sed without && in between, the change was not applied to the OpenBSD/SunOS branch. This leads to a test failure when ngspice returns nonzero, as in xpressn-1.cir, xpressn-2.cir, xpressn-3.cir, and bxpressn-1.cir.

Attached patch makes the code like the Linux code, and all tests now pass on OpenBSD.

[Anthony J. Bentley]

Sorry, I made that patch against an older revision instead of HEAD. But it’s just a matter of removing two &&.

[Holger Vogt]

Patch is uploaded to pre-master