generic-init.d: Do not double quote CELERYD_CHDIR. Closes #1235

extra/generic-init.d/celeryd

@@ -67,7 +67,7 @@ if [ -n "$CELERYD_GROUP" ]; then
 fi
 
 if [ -n "$CELERYD_CHDIR" ]; then
-    DAEMON_OPTS="$DAEMON_OPTS --workdir=\"$CELERYD_CHDIR\""
+    DAEMON_OPTS="$DAEMON_OPTS --workdir=$CELERYD_CHDIR"
 fi