Remove unneeded call to db_purge in postrm script and source the debconf file where it is required

distros/debian8/zoneminder.postrm

@@ -17,28 +17,29 @@ apache_remove() {
 
 if [ "$1" = "remove" ] || [ "$1" = "purge" ]; then
 
-    # Deconfigure the web server
-    db_get zoneminder/webserver
+    if [ -e /usr/share/debconf/confmodule ]; then
 
-    webservers="$RET"
-    for webserver in $webservers; do
-        webserver=${webserver%,}
-        # Currently we only support apache2
-        if [ "$webserver" = "apache2" ] ; then
-            apache_remove $1
-        fi
-    done
+        # Source the debconf stuff
+        . /usr/share/debconf/confmodule
+
+        # Deconfigure the web server
+        db_get zoneminder/webserver
+
+        webservers="$RET"
+        for webserver in $webservers; do
+            webserver=${webserver%,}
+            # Currently we only support apache2
+            if [ "$webserver" = "apache2" ] ; then
+                apache_remove $1
+            fi
+        done
+    fi
 
     # No need to manually remove the zm database and user, dbconfig take care of this
 fi
 
 if [ "$1" = "purge" ]; then
-    if [ -e /usr/share/debconf/confmodule ]; then
-        # Source the debconf stuff
-        . /usr/share/debconf/confmodule
-        # Remove all package records in the debconf database
-        db_purge
-    fi
+
     # Delete a potential remaining file not managed by debhelper
     rm -f /etc/zm/zm.conf.postinst.bak
 fi