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prevent copying of NULL (bug #4307)
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5708 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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@@ -52,12 +52,14 @@ static char *builtin_function_if(struct ast_channel *chan, char *cmd, char *data
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*iffalse = '\0';
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iffalse++;
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}
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} else
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iffalse = "";
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}
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if (expr && iftrue) {
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ret = ast_true(expr) ? iftrue : iffalse;
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strncpy(buf, ret, len);
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ret = buf;
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if (ret) {
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ast_copy_string(buf, ret, len);
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ret = buf;
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}
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} else {
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ast_log(LOG_WARNING, "Syntax $(if <expr>?[<truecond>][:<falsecond>])\n");
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ret = NULL;
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