call-settings: Fix style issues

diff --git a/src/call-settings.c b/src/call-settings.c
index 8dd2564..ede1a88 100644 (file)
--- a/src/call-settings.c
+++ b/src/call-settings.c
@@ -868,7 +868,7 @@ static void cs_register_ss_controls(struct ofono_call_settings *cs)
 
        __ofono_ussd_ssc_register(cs->ussd, "43", cw_ss_control, cs, NULL);
 
-       if (cs->driver->colr_query)
+       if (cs->driver->colr_query != NULL)
                __ofono_ussd_ssc_register(cs->ussd, "77",
                                        clip_cnap_colp_colr_ss, cs, NULL);
 }
@@ -882,7 +882,7 @@ static void cs_unregister_ss_controls(struct ofono_call_settings *cs)
 
        __ofono_ussd_ssc_unregister(cs->ussd, "43");
 
-       if (cs->driver->colr_query)
+       if (cs->driver->colr_query != NULL)
                __ofono_ussd_ssc_unregister(cs->ussd, "77");
 }
 
@@ -1388,7 +1388,7 @@ static void call_settings_remove(struct ofono_atom *atom)
        if (cs == NULL)
                return;
 
-       if (cs->driver && cs->driver->remove)
+       if (cs->driver != NULL && cs->driver->remove != NULL)
                cs->driver->remove(cs);
 
        g_free(cs);