avoid 'No HADOOP_CONF_DIR set' warnings

bin/giraph

@@ -109,6 +109,10 @@ if [ "$HADOOP_HOME" = "" ] ; then
   exit 1
 fi
 
+#avoid 'HADOOP_HOME is deprecated' warnings from Hadoop (1.0 and above).
+HADOOP_CONF_DIR=$HADOOP_HOME/conf
+HADOOP_TMP=$HADOOP_HOME
+unset HADOOP_HOME
 
 if [ "$HADOOP_CONF_DIR" = "" ] ; then
   HADOOP_CONF_DIR=$HADOOP_HOME/conf
@@ -120,8 +124,4 @@ fi
 # Giraph's jars to add to distributed cache via -libjar, which are csv rather than :sv
 GIRAPH_JARS=`echo ${JAR}:${CLASSPATH}|sed s/:/,/g`
 export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:$CLASSPATH
-#avoid 'HADOOP_HOME is deprecated' warnings from Hadoop (1.0 and above).
-HADOOP_CONF_DIR=$HADOOP_HOME/conf
-HADOOP_TMP=$HADOOP_HOME
-unset HADOOP_HOME
 HADOOP_CONF_DIR=$HADOOP_CONF_DIR exec "$HADOOP_TMP/bin/hadoop" --config $HADOOP_CONF_DIR jar $JAR $CLASS $HADOOP_PROPERTIES -libjars $GIRAPH_JARS  "$@"