https://issues.apache.org/bugzilla/show_bug.cgi?id=56457

            Bug ID: 56457
           Summary: mod_proxy_html.c: 2 * cut'n'paste errors
           Product: Apache httpd-2
           Version: 2.4.9
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_filter
          Assignee: [email protected]
          Reporter: [email protected]

[mod_proxy_html.c:326]: (style) Expression is always false because 'else if'
condition matches previous condition at line 320.

Source code is

    if ((ctx->cfg->doctype == fpi_html) || (ctx->cfg->doctype == fpi_xhtml)) {
        /* enforce html */
        if (!desc || desc->depr)
            return;

    }
    else if ((ctx->cfg->doctype == fpi_html)
             || (ctx->cfg->doctype == fpi_xhtml)) {
        /* enforce html legacy */
        if (!desc)
            return;
    }

[mod_proxy_html.c:379]: (style) Expression is always false because 'else if'
condition matches previous condition at line 372.

    if ((ctx->cfg->doctype == fpi_html) || (ctx->cfg->doctype == fpi_xhtml)) {
        /* enforce html */
        enforce = 2;
        if (!desc || desc->depr)
            return;

    }
    else if ((ctx->cfg->doctype == fpi_html)
             || (ctx->cfg->doctype == fpi_xhtml)) {
        enforce = 1;
        /* enforce html legacy */
        if (!desc) {
            return;
        }
    }

I got these two bugs from cppcheck, a static analysis tool.
It found many other things wrong.

I think apache would benefit from meeting cppcheck.

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