OF-746 further refine the regex based on patch submitter

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@13967 b35dd754-fafc-0310-a699-88a17e54d16e

build/debian/openfire.init.d

@@ -24,7 +24,7 @@
 if [ -z $JAVA_HOME ]; then
  JAVA_HOME=$(LC_ALL=C update-alternatives --display java \
     | grep best \
-    | grep -oe \/.*\.java \
+    | grep -oe \/.*\/bin\/java \
     | sed 's/\/jre\/.*//g')
     echo "best java alternative in: "$JAVA_HOME
 fi