[PATCH 2/3] lib: fwts_oops: fix fwts_oops_check dereference checks on oopses and warn_ons

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

fwts_oops_check() dereferences oopses and warn_ons before we check
if they are NULL.  Fix this by checking if they are NULL before
assiging zero to them.

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/lib/src/fwts_oops.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/lib/src/fwts_oops.c b/src/lib/src/fwts_oops.c
index 4eaad1f..18a14ee 100644
--- a/src/lib/src/fwts_oops.c
+++ b/src/lib/src/fwts_oops.c
@@ -117,14 +117,15 @@ static void fwts_klog_stack_dump(
 int fwts_oops_check(fwts_framework *fw, fwts_list *klog, int *oopses, int *warn_ons)
 {
 	fwts_list_link *item;
-	*oopses = 0;
-	*warn_ons = 0;
 
 	/* Sanity check */
 	if ((fw == NULL) || (oopses == NULL) ||
 	    (warn_ons == NULL) || (klog == NULL))
 		return FWTS_ERROR;
 
+	*oopses = 0;
+	*warn_ons = 0;
+
 	fwts_list_foreach(item, klog) {
 		char *line = fwts_klog_remove_timestamp(fwts_list_data(char *, item));
 		if ((strncmp("BUG:", line, 4) == 0) ||
-- 
1.7.10.4