Fix the memory allocation for the thresholds data

Allocate the appropriate amount of memory for storing the thresholds
data.  Before, we allocated the amount of memory required for storing a
_pointer_ to the thresholds data.  This crashed (at least) check_mysql
when using its "-S" option on FreeBSD/amd64 (as reported and analyzed by
Nikita Kalabukhov - 2797757).

Signed-off-by: Holger Weiss <holger@zedat.fu-berlin.de>

2 files changed, 4 insertions, 1 deletions

diff --git a/THANKS.in b/THANKS.in
index 189ba265..aba48c6b 100644
--- a/THANKS.in
+++ b/THANKS.in
@@ -254,3 +254,4 @@ Ben Timby
 Martin Foster
 Joe Presbrey
 Will Preston
+Nikita Kalabukhov
diff --git a/lib/utils_base.c b/lib/utils_base.c
index 77700f5b..4303e159 100644
--- a/lib/utils_base.c
+++ b/lib/utils_base.c
@@ -101,7 +101,9 @@ _set_thresholds(thresholds **my_thresholds, char *warn_string, char *critical_st
 {
         thresholds *temp_thresholds = NULL;
 
-        temp_thresholds = malloc(sizeof(temp_thresholds));
+        if ((temp_thresholds = malloc(sizeof(thresholds))) == NULL)
+                die(STATE_UNKNOWN, _("Cannot allocate memory: %s\n"),
+                    strerror(errno));
 
         temp_thresholds->warning = NULL;
         temp_thresholds->critical = NULL;