log.h: new log_oom() -> int -ENOMEM, use it

also a number of minor fixups and bug fixes: spelling, oom errors
that didn't print errors, not properly forwarding error codes,
few more consistency issues, et cetera

1 files changed, 2 insertions, 4 deletions

diff --git a/src/login/logind-button.c b/src/login/logind-button.c
index 62e0c3dbba..d023294a59 100644
--- a/src/login/logind-button.c
+++ b/src/login/logind-button.c
@@ -107,10 +107,8 @@ int button_open(Button *b) {
         }
 
         p = strappend("/dev/input/", b->name);
-        if (!p) {
-                log_error("Out of memory.");
-                return -ENOMEM;
-        }
+        if (!p)
+                return log_oom();
 
         b->fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
         free(p);