Simplify some error states

src/conf_includedir.c

@@ -147,7 +147,6 @@ int config__get_dir_files(const char *include_dir, char ***files, int *file_coun
 	int l_file_count = 0;
 	char **files_tmp;
 	size_t len;
-	int i;
 
 	DIR *dh;
 	struct dirent *de;
@@ -164,25 +163,11 @@ int config__get_dir_files(const char *include_dir, char ***files, int *file_coun
 
 				l_file_count++;
 				files_tmp = mosquitto__realloc(l_files, (size_t)l_file_count*sizeof(char *));
-				if(!files_tmp){
-					for(i=0; i<l_file_count-1; i++){
-						mosquitto__FREE(l_files[i]);
-					}
-					mosquitto__FREE(l_files);
-					closedir(dh);
-					return MOSQ_ERR_NOMEM;
-				}
+				if(!files_tmp) goto error;
 				l_files = files_tmp;
 
 				l_files[l_file_count-1] = mosquitto__malloc(len+1);
-				if(!l_files[l_file_count-1]){
-					for(i=0; i<l_file_count-1; i++){
-						mosquitto__FREE(l_files[i]);
-					}
-					mosquitto__FREE(l_files);
-					closedir(dh);
-					return MOSQ_ERR_NOMEM;
-				}
+				if(!l_files[l_file_count-1]) goto error;
 				snprintf(l_files[l_file_count-1], len, "%s/%s", include_dir, de->d_name);
 				l_files[l_file_count-1][len] = '\0';
 			}
@@ -197,6 +182,13 @@ int config__get_dir_files(const char *include_dir, char ***files, int *file_coun
 	*file_count = l_file_count;
 
 	return 0;
+error:
+	for(int i=0; i<l_file_count-1; i++){
+		mosquitto__FREE(l_files[i]);
+	}
+	mosquitto__FREE(l_files);
+	closedir(dh);
+	return MOSQ_ERR_NOMEM;
 }
 #endif
 

src/send_auth.c

@@ -40,34 +40,27 @@ int send__auth(struct mosquitto *context, uint8_t reason_code, const void *auth_
 	remaining_length = 1;
 
 	rc = mosquitto_property_add_string(&properties, MQTT_PROP_AUTHENTICATION_METHOD, context->auth_method);
-	if(rc){
-		mosquitto_property_free_all(&properties);
-		return rc;
-	}
+	if(rc) goto error;
 
 	if(auth_data != NULL && auth_data_len > 0){
 		rc = mosquitto_property_add_binary(&properties, MQTT_PROP_AUTHENTICATION_DATA, auth_data, auth_data_len);
-		if(rc){
-			mosquitto_property_free_all(&properties);
-			return rc;
-		}
+		if(rc) goto error;
 	}
 
 	remaining_length += property__get_remaining_length(properties);
 
-	if(packet__check_oversize(context, remaining_length)){
-		mosquitto_property_free_all(&properties);
-		return MOSQ_ERR_OVERSIZE_PACKET;
-	}
+	rc = packet__check_oversize(context, remaining_length);
+	if(rc) goto error;
 
 	rc = packet__alloc(&packet, CMD_AUTH, remaining_length);
-	if(rc){
-		mosquitto_property_free_all(&properties);
-		return rc;
-	}
+	if(rc) goto error;
+
 	packet__write_byte(packet, reason_code);
 	property__write_all(packet, properties, true);
 	mosquitto_property_free_all(&properties);
 
 	return packet__queue(context, packet);
+error:
+	mosquitto_property_free_all(&properties);
+	return rc;
 }