util: invoke sync() implicitly on freeze()

Suggested by Tom Gundersen.

TODO

@@ -1,3 +1,5 @@
+* excluse java hsp files by default https://bugzilla.redhat.com/show_bug.cgi?id=527425
+
 * drop IN_ATTRIB from inotify watches for .path units where possible to avoid
   lots of wakeups due to /dev changing when we watch a subdir of /dev.
 

src/util.c

@@ -3386,6 +3386,8 @@ int wait_for_terminate_and_warn(const char *name, pid_t pid) {
 }
 
 void freeze(void) {
+        sync();
+
         for (;;)
                 pause();
 }