tree eb4b692b942c5ea219fce9001b8234aad8486d3b
parent e8a328058d8562b544d65859ba539aa96404dc31
author Elliott Hughes <enh@google.com> 1492272675 -0700
committer Elliott Hughes <enh@google.com> 1492272675 -0700

Avoid "D linker  : (null)" with debug.ld.all for dlerror.

We only want to know when dlerror is actually set. The previous change
to this logic moved it so that we only show actual updates to dlerror,
not every string that might end up in dlerror's output. This change
ignores cases where we're _clearing_ dlerror (which happens on every
call to dlerror).

Bug: http://b/37287938
Test: ran tests
Change-Id: I0c30ee199dc76d9aea165c1d90f694ead488518b