Remove trailing whitespaces

Change-Id: I6f83333a6ee0fbc562a12bb9555c43a44c98768e
diff --git a/fastboot/usb.h b/fastboot/usb.h
index cc157d5..df9efde 100644
--- a/fastboot/usb.h
+++ b/fastboot/usb.h
@@ -9,7 +9,7 @@
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the 
+ *    the documentation and/or other materials provided with the
  *    distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
@@ -19,7 +19,7 @@
  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
@@ -42,19 +42,19 @@
     unsigned char dev_class;
     unsigned char dev_subclass;
     unsigned char dev_protocol;
-    
+
     unsigned char ifc_class;
     unsigned char ifc_subclass;
     unsigned char ifc_protocol;
 
     unsigned char has_bulk_in;
     unsigned char has_bulk_out;
-    
+
     unsigned char writable;
 
     char serial_number[256];
 };
-  
+
 typedef int (*ifc_match_func)(usb_ifc_info *ifc);
 
 usb_handle *usb_open(ifc_match_func callback);