sd-bus: make sure bus_map_all_properties() handle booleans right

sd-bus generally exposes bools as "int" instead of "bool" in the public API.
This is relevant when unmarshaling booleans, as the relevant functions expect
an int* pointer and no bool* pointer. Since sizeof(bool) is not necessarily the
same as sizeof(int) this is problematic and might result in memory corruption.

Let's fix this, and make sure bus_map_all_properties() handles booleans as
ints, as the rest of sd-bus, and make all users of it expect the right thing.

src/timedate/timedatectl.c

@@ -57,11 +57,11 @@ typedef struct StatusInfo {
         char *timezone;
 
         usec_t rtc_time;
-        bool rtc_local;
+        int rtc_local;
 
-        bool ntp_enabled;
-        bool ntp_capable;
-        bool ntp_synced;
+        int ntp_enabled;
+        int ntp_capable;
+        int ntp_synced;
 } StatusInfo;
 
 static void status_info_clear(StatusInfo *info) {