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Avoid cppcheck warnings; removing unused vars and a bit of cleanup.
Patch by: Clod Patry Review: https://reviewboard.asterisk.org/r/1651 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@354429 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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@@ -251,7 +251,7 @@ static int receive_dtmf_digits(struct ast_channel *chan, char *digit_string, int
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break;
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}
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if ((r = ast_waitfor(chan, -1) < 0)) {
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if ((r = ast_waitfor(chan, -1)) < 0) {
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ast_debug(1, "Waitfor returned %d\n", r);
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continue;
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}
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