Remove warning of DCHECK_NOTNULL

http://code.google.com/p/google-glog/issues/detail?id=87


git-svn-id: https://google-glog.googlecode.com/svn/trunk@127 eb4d4688-79bd-11dd-afb4-1d65580434c0

src/glog/logging.h.in

@@ -1037,7 +1037,7 @@ const LogSeverity GLOG_0 = GLOG_ERROR;
   while (false) \
     GLOG_MSVC_POP_WARNING() CHECK_GT(val1, val2)
 
-#define DCHECK_NOTNULL(val) (val)
+#define DCHECK_NOTNULL(val) (void)(val)
 
 #define DCHECK_STREQ(str1, str2) \
   GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \

src/windows/glog/logging.h

@@ -1041,7 +1041,7 @@ const LogSeverity GLOG_0 = GLOG_ERROR;
   while (false) \
     GLOG_MSVC_POP_WARNING() CHECK_GT(val1, val2)
 
-#define DCHECK_NOTNULL(val) (val)
+#define DCHECK_NOTNULL(val) (void)(val)
 
 #define DCHECK_STREQ(str1, str2) \
   GLOG_MSVC_PUSH_DISABLE_WARNING(4127) \