make gcc shut up

If -flto is used then gcc will generate a lot more warnings than before,
among them a number of use-without-initialization warnings. Most of them
without are false positives, but let's make them go away, because it
doesn't really matter.

3 files changed, 4 insertions, 4 deletions

diff --git a/src/journal/journal-gatewayd.c b/src/journal/journal-gatewayd.c
index 5c35d8e77e..7e97a3588c 100644
--- a/src/journal/journal-gatewayd.c
+++ b/src/journal/journal-gatewayd.c
@@ -744,7 +744,7 @@ static int request_handler_file(
 
 static int get_virtualization(char **v) {
         _cleanup_bus_unref_ sd_bus *bus = NULL;
-        char *b;
+        char *b = NULL;
         int r;
 
         r = sd_bus_default_system(&bus);
@@ -780,7 +780,7 @@ static int request_handler_machine(
         RequestMeta *m = connection_cls;
         int r;
         _cleanup_free_ char* hostname = NULL, *os_name = NULL;
-        uint64_t cutoff_from, cutoff_to, usage;
+        uint64_t cutoff_from = 0, cutoff_to = 0, usage;
         char *json;
         sd_id128_t mid, bid;
         _cleanup_free_ char *v = NULL;
diff --git a/src/journal/journalctl.c b/src/journal/journalctl.c
index d406daeae9..a328ba11b0 100644
--- a/src/journal/journalctl.c
+++ b/src/journal/journalctl.c
@@ -1651,7 +1651,7 @@ int main(int argc, char *argv[]) {
         }
 
         if (arg_action == ACTION_DISK_USAGE) {
-                uint64_t bytes;
+                uint64_t bytes = 0;
                 char sbytes[FORMAT_BYTES_MAX];
 
                 r = sd_journal_get_usage(j, &bytes);
diff --git a/src/journal/sd-journal.c b/src/journal/sd-journal.c
index 6abbacf004..fa2009c5dc 100644
--- a/src/journal/sd-journal.c
+++ b/src/journal/sd-journal.c
@@ -1281,7 +1281,7 @@ static bool file_type_wanted(int flags, const char *filename) {
 }
 
 static int add_any_file(sd_journal *j, const char *path) {
-        JournalFile *f;
+        JournalFile *f = NULL;
         int r;
 
         assert(j);