Drop trailing whitespace in various files.

[libsigrok.git] / src / device.c

diff --git a/src/device.c b/src/device.c
index 71221433ca0321c1ee6ca95fbab3cf335448885a..d87d2904a313f74e870a370279cbd64d42110d7a 100644 (file)
--- a/src/device.c
+++ b/src/device.c
@@ -409,7 +409,8 @@ SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus,
 /**
  * Free struct sr_usb_dev_inst * allocated by sr_usb_dev_inst().
  *
- * @param usb The struct sr_usb_dev_inst * to free. Must not be NULL.
+ * @param usb The struct sr_usb_dev_inst * to free. If NULL, this
+ *            function does nothing.
  *
  * @private
  */
@@ -488,6 +489,9 @@ SR_PRIV struct sr_usbtmc_dev_inst *sr_usbtmc_dev_inst_new(const char *device)
 /** @private */
 SR_PRIV void sr_usbtmc_dev_inst_free(struct sr_usbtmc_dev_inst *usbtmc)
 {
+       if (!usbtmc)
+               return;
+
        g_free(usbtmc->device);
        g_free(usbtmc);
 }