Fixed TBB_PREVIEW_GLOBAL_CONTROL define value

Signed-off-by: Nick Avramoussis <[email protected]>

Author: Idclip

openvdb/openvdb/cmd/openvdb_render.cc

@@ -25,7 +25,7 @@
 // added in TBB 2019U4 but exists in 2018 as a preview feature. To avoid more
 // compile time branching (as we still support 2018), we use it in 2018 too by
 // enabling the below define.
-#define TBB_PREVIEW_GLOBAL_CONTROL
+#define TBB_PREVIEW_GLOBAL_CONTROL 1
 #include <tbb/global_control.h>
 #include <tbb/tick_count.h>