[BlueZ PATCH v2 2/2] hog-lib: Fix scan-build error

[Luiz Augusto von Dentz <luiz.dentz@gmail.com>]

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This fixes the following errors:
profiles/input/hog-lib.c:600:19: warning: Access to field 'handle'
results in a dereference of a null pointer (loaded from variable 'chr')
        report->handle = chr->handle;
                         ^~~~~~~~~~~
profiles/input/hog-lib.c:637:11: warning: Access to field 'value_handle'
results in a dereference of a null pointer (loaded from variable 'chr')
                start = chr->value_handle + 1;
                        ^~~~~~~~~~~~~~~~~
profiles/input/hog-lib.c:1240:11: warning: Access to field 'value_handle'
results in a dereference of a null pointer (loaded from variable 'chr')
                start = chr->value_handle + 1;
                        ^~~~~~~~~~~~~~~~~
---
 profiles/input/hog-lib.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/profiles/input/hog-lib.c b/profiles/input/hog-lib.c
index ace233d3ce8b..021db386f3b7 100644
--- a/profiles/input/hog-lib.c
+++ b/profiles/input/hog-lib.c
@@ -590,6 +590,9 @@ static struct report *report_new(struct bt_hog *hog, struct gatt_char *chr)
 	struct report *report;
 	GSList *l;
 
+	if (!chr)
+		return NULL;
+
 	/* Skip if report already exists */
 	l = g_slist_find_custom(hog->reports, chr, report_chrc_cmp);
 	if (l)
@@ -630,6 +633,9 @@ static void external_service_char_cb(uint8_t status, GSList *chars,
 		chr = l->data;
 		next = l->next ? l->next->data : NULL;
 
+		if (!chr)
+			continue;
+
 		DBG("0x%04x UUID: %s properties: %02x",
 				chr->handle, chr->uuid, chr->properties);
 
@@ -1232,6 +1238,9 @@ static void char_discovered_cb(uint8_t status, GSList *chars, void *user_data)
 		chr = l->data;
 		next = l->next ? l->next->data : NULL;
 
+		if (!chr)
+			continue;
+
 		DBG("0x%04x UUID: %s properties: %02x",
 				chr->handle, chr->uuid, chr->properties);
 
-- 
2.37.2