fixed memory leak in ogl::Texture2D

modules/core/src/opengl_interop.cpp

@@ -1022,6 +1022,7 @@ cv::ogl::Texture2D::Texture2D(InputArray arr, bool autoRelease) : rows_(0), cols
             #else
                 GpuMat dmat = arr.getGpuMat();
                 ogl::Buffer buf(dmat, ogl::Buffer::PIXEL_UNPACK_BUFFER);
+                buf.setAutoRelease(true);
                 buf.bind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
                 impl_ = new Impl(internalFormats[cn], asize.width, asize.height, srcFormats[cn], gl_types[depth], 0, autoRelease);
                 ogl::Buffer::unbind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
@@ -1135,6 +1136,7 @@ void cv::ogl::Texture2D::copyFrom(InputArray arr, bool autoRelease)
             #else
                 GpuMat dmat = arr.getGpuMat();
                 ogl::Buffer buf(dmat, ogl::Buffer::PIXEL_UNPACK_BUFFER);
+                buf.setAutoRelease(true);
                 buf.bind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
                 impl_->copyFrom(asize.width, asize.height, srcFormats[cn], gl_types[depth], 0);
                 ogl::Buffer::unbind(ogl::Buffer::PIXEL_UNPACK_BUFFER);
@@ -1185,6 +1187,7 @@ void cv::ogl::Texture2D::copyTo(OutputArray arr, int ddepth, bool autoRelease) c
                 throw_nocuda();
             #else
                 ogl::Buffer buf(rows_, cols_, CV_MAKE_TYPE(ddepth, cn), ogl::Buffer::PIXEL_PACK_BUFFER);
+                buf.setAutoRelease(true);
                 buf.bind(ogl::Buffer::PIXEL_PACK_BUFFER);
                 impl_->copyTo(dstFormat, gl_types[ddepth], 0);
                 ogl::Buffer::unbind(ogl::Buffer::PIXEL_PACK_BUFFER);