Fix a coverity issue

This patch fixes a coverity issue [1].
Since 'ctx' is dereferenced in EVP_DigestInit_ex call, it should be NULL checked before calling this function.

[1] http://10.113.139.115:8081/reports.htm#v19039/p11006/fileInstanceId=612233125&defectInstanceId=130271535&mergedDefectId=1706287

Change-Id: I0e1e8a7a775734649ecffe9d5adaf0bd71dac8a5
Signed-off-by: Sung-hun Kim <sfoon.kim@samsung.com>

diff --git a/src/crash-stack/crash-stack.c b/src/crash-stack/crash-stack.c
index 9a7f518..b8b93c4 100644 (file)
--- a/src/crash-stack/crash-stack.c
+++ b/src/crash-stack/crash-stack.c
@@ -225,6 +225,11 @@ static void __print_hash(Callstack *callstack, json_object *jobj, struct addr_no
        EVP_MD_CTX *ctx = EVP_MD_CTX_create();
        const EVP_MD *md = EVP_sha256();
 
+       if (!ctx) {
+               _E("Unable to get EVP_MD_CTX object");
+               return;
+       }
+
        if (!EVP_DigestInit_ex(ctx, md, NULL)) {
                _E("Unable to initialize hashing module");
                goto out;