Use dh_prep instead of dh_clean -k

diff --git a/debian/rules b/debian/rules
index ecba4a8..0e2a3e7 100755 (executable)
--- a/debian/rules
+++ b/debian/rules
@@ -33,7 +33,7 @@ clean:
 install: build
        dh_testdir
        dh_testroot
-       dh_clean -k
+       dh_prep
        dh_installdirs
 
        -mkdirhier "debian/tmp`/usr/bin/php-config --extension-dir`"