Auditor: fix concurrent push bug (#1398)

Author: IanButterworth

src/Auditor.jl

@@ -411,9 +411,12 @@ function check_dynamic_linkage(oh, prefix, bin_files;
         # Look at every dynamic link, and see if we should do anything about that link...
         libs = find_libraries(oh)
         ignored_libraries = String[]
+        ignored_libraries_lock = Threads.ReentrantLock()
         Threads.@threads for libname in collect(keys(libs))
             if should_ignore_lib(libname, oh, platform)
-                push!(ignored_libraries, libname)
+                lock(ignored_libraries_lock) do
+                    push!(ignored_libraries, libname)
+                end
                 continue
             end