compiler_wrapper: make a loop c89-compatible

building this on the CQ is failing because this loop uses the c99
feature declaring something in the first clause of a for loop.

BUG=None
TEST=CQ

Change-Id: I92729d30bd392c46e2b1183b92874212bdc59d6f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2676930
Tested-by: George Burgess <gbiv@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
1 file changed