Fix a potential bug of ocl::CannyBuf.

The program would crash if release is called twice.
12 years ago · 4f328d8388
parent 7586145235
commit 4f328d8388
1 changed files with 5 additions and 1 deletions
--- a/modules/ocl/src/canny.cpp
+++ b/modules/ocl/src/canny.cpp
@ -112,7 +112,11 @@ void cv::ocl::CannyBuf::release()
    mapBuf.release();
    trackBuf1.release();
    trackBuf2.release();
-    openCLFree(counter);
+    if(counter)
+    {
+        openCLFree(counter);
+        counter = NULL;
+    }
 }

 namespace cv