[PATCH 1/5] Check type is not NULL before access

clang Logic error Dereference of null pointer

Check type before dereference and report internal error in case
it's undefined and return from the function.

Signed-off-by: Zdenek Kabelac <[email protected]>
---
 libdm/libdm-report.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/libdm/libdm-report.c b/libdm/libdm-report.c
index 7631e21..db24fed 100644
--- a/libdm/libdm-report.c
+++ b/libdm/libdm-report.c
@@ -273,6 +273,12 @@ static void _display_fields(struct dm_report *rh)
 			log_warn("%*.*s", (int) strlen(desc) + 7,
 				 (int) strlen(desc) + 7,
 				 "-------------------------------------------------------------------------------");
+
+			if (!type) {
+				log_error(INTERNAL_ERROR "Type is not defined.");
+				return;
+			}
+
 			log_warn("  %sall%-*s - %s", type->prefix,
 				 (int) (id_len - 3 - strlen(type->prefix)), "",
 				 "All fields in this section.");
-- 
1.7.3.2