hwclock: fix sizeof bug (used it on pointer, not array); make --systohc exact

function                                             old     new   delta
hwclock_main                                         329     428     +99
rtc_adjtime_is_utc                                   138     134      -4
edir                                                 365     354     -11
read_rtc                                              39      23     -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 99/-31)             Total: 68 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/libbb/rtc.c b/libbb/rtc.c
index 51834f8f9..2f38b8a7e 100644
--- a/libbb/rtc.c
+++ b/libbb/rtc.c
@@ -19,7 +19,7 @@ int FAST_FUNC rtc_adjtime_is_utc(void)
         FILE *f = fopen_for_read(ADJTIME_PATH);
 
         if (f) {
-                RESERVE_CONFIG_BUFFER(buffer, 128);
+                char buffer[128];
 
                 while (fgets(buffer, sizeof(buffer), f)) {
                         int len = strlen(buffer);
@@ -35,8 +35,6 @@ int FAST_FUNC rtc_adjtime_is_utc(void)
                         }
                 }
                 fclose(f);
-
-                RELEASE_CONFIG_BUFFER(buffer);
         }
 
         return utc;