Return the correct bytes written.

ghent360 · ghent360 · commit 85bc9b084644 · 2019-02-26T16:41:29.000-08:00
diff --git a/cores/arduino/USBSerial.cpp b/cores/arduino/USBSerial.cpp
@@ -84,7 +84,7 @@ size_t USBSerial::write(const uint8_t *buffer, size_t size)
       // After storing data, start transmitting process
       CDC_continue_transmit();
     } else if (!CDC_connected()) {
-      return size;
+      return size - rest;
     }
   }
   return size;

Original file line number	Diff line number	Diff line change
`@@ -84,7 +84,7 @@ size_t USBSerial::write(const uint8_t *buffer, size_t size)`
`84`	`84`	`// After storing data, start transmitting process`
`85`	`85`	`CDC_continue_transmit();`
`86`	`86`	`} else if (!CDC_connected()) {`
`87`		`- return size;`
	`87`	`+ return size - rest;`
`88`	`88`	`}`
`89`	`89`	`}`
`90`	`90`	`return size;`