fix equery bash autocomplete

An unintended consequence of I186e14ac4b9e823885c0a7c7f4177603cbf3e682
is that filenames are no longer autocompleted when being entered as the
second CLI argument to equery. This CL reenables default autocompletion
for arguments after the first argument.

BUG=None
TEST=in chroot, enter `equery belongs [tab][tab]`. See autocomplete list
of files.

Change-Id: I3b2510de86a73c57a2c75427f5aa2e1b73821be7
Reviewed-on: https://gerrit.chromium.org/gerrit/45509
Tested-by: Aviv Keshet <akeshet@chromium.org>
Reviewed-by: Chris Sosa <sosa@chromium.org>
Commit-Queue: Aviv Keshet <akeshet@chromium.org>
diff --git a/bash_completion b/bash_completion
index 60ddb9b..23347e5 100644
--- a/bash_completion
+++ b/bash_completion
@@ -273,7 +273,7 @@
 complete -o bashdefault -o default -o nospace -F _autotest_complete autotest
 complete -F _cros_workon cros_workon
 complete -F _complete_repo repo
-complete -F _complete_equery equery
+complete -o bashdefault -o default -F _complete_equery equery
 
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