pcu_utils.h: Fix trailing whitespace

Change-Id: I113766e342a00f61f9894dee1bb89b8ae8354007
diff --git a/src/pcu_utils.h b/src/pcu_utils.h
index cb2fd91..1d43045 100644
--- a/src/pcu_utils.h
+++ b/src/pcu_utils.h
@@ -15,7 +15,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
-#pragma once 
+#pragma once
 #ifdef __cplusplus
 extern "C" {
 #endif