[libxml2] Minor fixes to configure.js

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 3e7e75bed2cf2853b0d42d635d36676b3330d475
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Thu Jan 2 15:19:57 2020 +0100

    Minor fixes to configure.js
    
    - Semicolon coding style
    - Remove duplicated option check
    
    Found by lgtm.com

 win32/configure.js | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)
---
diff --git a/win32/configure.js b/win32/configure.js
index e8c13ee0..ed1e0618 100644
--- a/win32/configure.js
+++ b/win32/configure.js
@@ -210,16 +210,16 @@ function discoverVersion()
                s = new String(ln);
                if (s.search(/^LIBXML_MAJOR_VERSION=/) != -1) {
                        vf.WriteLine(s);
-                       verMajor = s.substring(s.indexOf("=") + 1, s.length)
+                       verMajor = s.substring(s.indexOf("=") + 1, s.length);
                } else if(s.search(/^LIBXML_MINOR_VERSION=/) != -1) {
                        vf.WriteLine(s);
-                       verMinor = s.substring(s.indexOf("=") + 1, s.length)
+                       verMinor = s.substring(s.indexOf("=") + 1, s.length);
                } else if(s.search(/^LIBXML_MICRO_VERSION=/) != -1) {
                        vf.WriteLine(s);
-                       verMicro = s.substring(s.indexOf("=") + 1, s.length)
+                       verMicro = s.substring(s.indexOf("=") + 1, s.length);
                } else if(s.search(/^LIBXML_MICRO_VERSION_SUFFIX=/) != -1) {
                        vf.WriteLine(s);
-                       verMicroSuffix = s.substring(s.indexOf("=") + 1, s.length)
+                       verMicroSuffix = s.substring(s.indexOf("=") + 1, s.length);
                }
        }
        cf.Close();
@@ -280,7 +280,7 @@ function discoverVersion()
                vf.WriteLine("DYNRUNTIME=" + (dynruntime? "1" : "0"));
        }
        vf.Close();
-       versionFile = "rcVersion.h"
+       versionFile = "rcVersion.h";
        vf = fso.CreateTextFile(versionFile, true);
        vf.WriteLine("/*");
        vf.WriteLine("  " + versionFile);
@@ -291,7 +291,7 @@ function discoverVersion()
        vf.WriteLine("#define LIBXML_MINOR_VERSION " + verMinor);
        vf.WriteLine("#define LIBXML_MICRO_VERSION " + verMicro);
        vf.WriteLine("#define LIBXML_DOTTED_VERSION " + "\"" + verMajor + "." + verMinor + "." + verMicro + 
"\"");
-       vf.Close()
+       vf.Close();
 }
 
 /* Configures libxml. This one will generate xmlversion.h from xmlversion.h.in
@@ -544,8 +544,6 @@ for (i = 0; (i < WScript.Arguments.length) && (error == 0); i++) {
                        buildStatic = strToBool(arg.substring(opt.length + 1, arg.length));
                else if (opt == "prefix")
                        buildPrefix = arg.substring(opt.length + 1, arg.length);
-               else if (opt == "incdir")
-                       buildIncPrefix = arg.substring(opt.length + 1, arg.length);
                else if (opt == "bindir")
                        buildBinPrefix = arg.substring(opt.length + 1, arg.length);
                else if (opt == "libdir")