common: Tweak new code to keep already translated strings.

* common/asshelp.c (wait_for_sock): Replace NAME by WHICH and adjust
caller.  Revert to use the former strings.

Note that the second of these strings

"waiting for the agent to come up ... (%ds)\n"
"connection to agent established\n"

does not use a proper article. This should be fixed but would
introduce a string change so that it is better done in a separate
commit.

• Fixes-commit: 0471ff9d3bf8d6b9a359f3c426d70d0935066907
• Signed-off-by: Werner Koch <wk@gnupg.org>