File mc-extd-doc.patch of Package mc

Index: misc/ext.d/doc.sh.in
===================================================================
--- misc/ext.d/doc.sh.in.orig
+++ misc/ext.d/doc.sh.in
@@ -52,7 +52,7 @@ do_view_action() {
         fi
         ;;
     msdoc)
-        if wvHtml >/dev/null 2>&1; then
+        if wvHtml >/dev/null 2>&1 && which elinks >/dev/null 2>&1; then
             tmp=`mktemp -d ${TMPDIR:-/tmp}/%p.XXXXXX`
             wvHtml "${MC_EXT_FILENAME}" --targetdir="$tmp" page.html
             elinks -dump "$tmp/page.html"
@@ -68,7 +68,7 @@ do_view_action() {
         fi
         ;;
     msxls)
-        if xlhtml >/dev/null 2>&1; then
+        if xlhtml >/dev/null 2>&1 && which elinks >/dev/null 2>&1; then
             tmp=`mktemp -d ${TMPDIR:-/tmp}/%p.XXXXXX`
             xlhtml -a "${MC_EXT_FILENAME}" > "$tmp/page.html"
             elinks -dump "$tmp/page.html"