only try to define it if it isn't yet defined..
commit3c4204d5946353e6e9a297bb65dc3c47ccafa91b
authorNicJA <NicJA@fb15a70f-31f2-0310-bbcc-cdcc74a49acc>
Fri, 24 Mar 2017 14:18:19 +0000 (24 14:18 +0000)
committerNicJA <NicJA@fb15a70f-31f2-0310-bbcc-cdcc74a49acc>
Fri, 24 Mar 2017 14:18:19 +0000 (24 14:18 +0000)
treeb9e49cb61a040d9f9ef630b4e9185fd01004e40e
parentff67a98a2adeb2f80c00a0e7a001e61db8a84e2c
only try to define it if it isn't yet defined..

git-svn-id: https://svn.aros.org/svn/aros/trunk/AROS@54264 fb15a70f-31f2-0310-bbcc-cdcc74a49acc
arch/all-pc/exec/exec_platform.h