[lttng-dev] [PATCH lttng-tools] Fix: null dereference on error path for create_ctx_type

[Jonathan Rajotte]

When zmalloc of type->opt fail the destroy_ctx_type would result in a
null dereference.

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien at efficios.com>
---
 src/bin/lttng/commands/add_context.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/bin/lttng/commands/add_context.c b/src/bin/lttng/commands/add_context.c
index 5fc65bf..df722bb 100644
--- a/src/bin/lttng/commands/add_context.c
+++ b/src/bin/lttng/commands/add_context.c
@@ -662,7 +662,9 @@ void destroy_ctx_type(struct ctx_type *type)
 	if (!type) {
 		return;
 	}
-	free(type->opt->symbol);
+	if (type->opt) {
+		free(type->opt->symbol);
+	}
 	free(type->opt);
 	free(type);
 }
-- 
2.7.4