core: Do not compare expression against NULL

This patch generate via coccinelle with:

@ disable is_null,isnt_null1 @
expression E;
@@

(
- E == NULL
+ !E
|
- E != NULL
+ E
)

1 files changed, 5 insertions, 5 deletions

diff --git a/src/main.c b/src/main.c
index 3689beb..46dba44 100644
--- a/src/main.c
+++ b/src/main.c
@@ -70,19 +70,19 @@ static void parse_config(GKeyFile *config)
 	GError *error = NULL;
 	bool boolean;
 
-	if (config == NULL)
+	if (!config)
 		return;
 
 	DBG("parsing main.conf");
 
 	boolean = g_key_file_get_boolean(config, "General",
 						"ConstantPoll", &error);
-	if (error == NULL)
+	if (!error)
 		near_settings.constant_poll = boolean;
 
 	boolean = g_key_file_get_boolean(config, "General",
 						"DefaultPowered", &error);
-	if (error == NULL)
+	if (!error)
 		near_settings.default_powered = boolean;
 
 	g_clear_error(&error);
@@ -224,7 +224,7 @@ int main(int argc, char *argv[])
 	g_option_context_add_main_entries(context, options, NULL);
 
 	if (!g_option_context_parse(context, &argc, &argv, &error)) {
-		if (error != NULL) {
+		if (error) {
 			g_printerr("%s\n", error->message);
 			g_error_free(error);
 		} else
@@ -246,7 +246,7 @@ int main(int argc, char *argv[])
 	dbus_error_init(&err);
 
 	conn = g_dbus_setup_bus(DBUS_BUS_SYSTEM, NFC_SERVICE, &err);
-	if (conn == NULL) {
+	if (!conn) {
 		if (dbus_error_is_set(&err)) {
 			fprintf(stderr, "%s\n", err.message);
 			dbus_error_free(&err);