ocl: correct disabling of OpenCL code

modules/core/src/precomp.hpp

@@ -54,7 +54,9 @@
 
 #include "opencv2/core/private.hpp"
 #include "opencv2/core/private.cuda.hpp"
+#ifdef HAVE_OPENCL
 #include "opencv2/core/ocl.hpp"
+#endif
 
 #include "opencv2/hal.hpp"
 
@@ -262,7 +264,11 @@ struct ImplCollector
 
 struct CoreTLSData
 {
-    CoreTLSData() : device(0), useOpenCL(-1), useIPP(-1)
+    CoreTLSData() :
+#ifdef HAVE_OPENCL
+        device(0), useOpenCL(-1),
+#endif
+        useIPP(-1)
     {
 #ifdef HAVE_TEGRA_OPTIMIZATION
         useTegra = -1;
@@ -270,9 +276,11 @@ struct CoreTLSData
     }
 
     RNG rng;
+#ifdef HAVE_OPENCL
     int device;
     ocl::Queue oclQueue;
     int useOpenCL; // 1 - use, 0 - do not use, -1 - auto/not initialized
+#endif
     int useIPP; // 1 - use, 0 - do not use, -1 - auto/not initialized
 #ifdef HAVE_TEGRA_OPTIMIZATION
     int useTegra; // 1 - use, 0 - do not use, -1 - auto/not initialized