Fix cpplint whitespace/comments issues

Change-Id: Iae286862c85fb8fd8901eae1204cd6d271d69496
diff --git a/runtime/jdwp/jdwp_request.cc b/runtime/jdwp/jdwp_request.cc
index 440b51b..a9dd1e1 100644
--- a/runtime/jdwp/jdwp_request.cc
+++ b/runtime/jdwp/jdwp_request.cc
@@ -140,7 +140,7 @@
 
 JdwpLocation Request::ReadLocation() {
   JdwpLocation location;
-  memset(&location, 0, sizeof(location)); // Allows memcmp(3) later.
+  memset(&location, 0, sizeof(location));  // Allows memcmp(3) later.
   location.type_tag = ReadTypeTag();
   location.class_id = ReadObjectId("class");
   location.method_id = ReadMethodId();