Instrumented libraries: fix NSS build.

Unset LDFLAGS before building. Otherwise we override the default LDFLAGS in the
makefile, breaking the build. We want to append our flags to the default flags
instead.

BUG=418175
TBR=glider@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/611083003

Cr-Original-Commit-Position: refs/heads/master@{#297200}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: aba96951daceed59306f501d6382b43ba87931c6
1 file changed