Fix a few typos and a compiler warning

libwacom/libwacom.h

@@ -133,7 +133,7 @@ typedef struct _WacomDeviceDatabase WacomDeviceDatabase;
  * @ingroup context
  */
 enum WacomErrorCode {
-	WERROR_NONE,          /**< No error has occured */
+	WERROR_NONE,          /**< No error has occurred */
 	WERROR_BAD_ALLOC,     /**< Allocation error */
 	WERROR_INVALID_PATH,  /**< A path specified is invalid */
 	WERROR_INVALID_DB,    /**< The passed DB is invalid */
@@ -464,7 +464,7 @@ libwacom_new_from_builder(const WacomDeviceDatabase *db,
  * @param fallback Whether we should create a generic if model is unknown
  * @param error If not NULL, set to the error if any occurs
  *
- * @return A new reference to this device or NULL on errror.
+ * @return A new reference to this device or NULL on error.
  *
  * @ingroup devices
  */
@@ -487,7 +487,7 @@ libwacom_new_from_path(const WacomDeviceDatabase *db,
  * @param product_id The product ID of the device
  * @param error If not NULL, set to the error if any occurs
  *
- * @return A new reference to this device or NULL on errror.
+ * @return A new reference to this device or NULL on error.
  *
  * @ingroup devices
  */

test/test-dbverify.c

@@ -164,13 +164,12 @@ duplicate_database(WacomDeviceDatabase *db,
 		   const char *dirname)
 {
 	WacomDevice **device, **devices;
-	int i;
 
 	devices = libwacom_list_devices_from_database(db, NULL);
 	g_assert(devices);
 	g_assert(*devices);
 
-	for (device = devices, i = 0; *device; device++, i++) {
+	for (device = devices; *device; device++) {
 		int i;
 		int fd;
 		g_autofree char *path = NULL;