fix gcc warnings about uninitialized variables

like:

src/shared/install.c: In function ‘unit_file_lookup_state’:
src/shared/install.c:1861:16: warning: ‘r’ may be used uninitialized in
this function [-Wmaybe-uninitialized]
         return r < 0 ? r : state;
                ^
src/shared/install.c:1796:13: note: ‘r’ was declared here
         int r;
             ^

1 files changed, 1 insertions, 1 deletions

diff --git a/src/journal-remote/journal-remote-parse.c b/src/journal-remote/journal-remote-parse.c
index e8442d319e..5ff05d3ad6 100644
--- a/src/journal-remote/journal-remote-parse.c
+++ b/src/journal-remote/journal-remote-parse.c
@@ -321,7 +321,7 @@ static int process_data(RemoteSource *source) {
         switch(source->state) {
         case STATE_LINE: {
                 char *line, *sep;
-                size_t n;
+                size_t n = 0;
 
                 assert(source->data_size == 0);