time-util: make timespec_load_nsec() static

The timespec_load_nsec() function has no callers outside of the
time-util.c, so we can make it static.

src/basic/time-util.c

@@ -42,6 +42,8 @@
 #include "strv.h"
 #include "time-util.h"
 
+static nsec_t timespec_load_nsec(const struct timespec *ts);
+
 usec_t now(clockid_t clock_id) {
         struct timespec ts;
 
@@ -116,7 +118,6 @@ dual_timestamp* dual_timestamp_from_boottime_or_monotonic(dual_timestamp *ts, us
         return ts;
 }
 
-
 usec_t timespec_load(const struct timespec *ts) {
         assert(ts);
 
@@ -132,7 +133,7 @@ usec_t timespec_load(const struct timespec *ts) {
                 (usec_t) ts->tv_nsec / NSEC_PER_USEC;
 }
 
-nsec_t timespec_load_nsec(const struct timespec *ts) {
+static nsec_t timespec_load_nsec(const struct timespec *ts) {
         assert(ts);
 
         if (ts->tv_sec == (time_t) -1 &&

src/basic/time-util.h

@@ -92,8 +92,6 @@ struct timespec *timespec_store(struct timespec *ts, usec_t u);
 usec_t timeval_load(const struct timeval *tv) _pure_;
 struct timeval *timeval_store(struct timeval *tv, usec_t u);
 
-nsec_t timespec_load_nsec(const struct timespec *ts) _pure_;
-
 char *format_timestamp(char *buf, size_t l, usec_t t);
 char *format_timestamp_utc(char *buf, size_t l, usec_t t);
 char *format_timestamp_us(char *buf, size_t l, usec_t t);