Cycles: Fix compilation error after recent logging changes

This file uses std::ostream for helper << operators, so need to make sure
corresponding header is included.

diff --git a/intern/cycles/util/util_logging.h b/intern/cycles/util/util_logging.h
index 6380cb13a9ba66df8470d3ae2d175cf3541690cb..492f830e67cc9b29619d985c1a9cda67b7657eeb 100644 (file)
--- a/intern/cycles/util/util_logging.h
+++ b/intern/cycles/util/util_logging.h
@@ -21,6 +21,8 @@
 #  include <glog/logging.h>
 #endif
 
+#include <iostream>
+
 CCL_NAMESPACE_BEGIN
 
 #if !defined(WITH_CYCLES_LOGGING) || defined(__KERNEL_GPU__)