mem: resolve memory leak in clCreateImage

Author: sophimao

src/acl_mem.cpp

@@ -198,6 +198,22 @@ CL_API_ENTRY cl_int CL_API_CALL clReleaseMemObjectIntelFPGA(cl_mem mem) {
       --mem->fields.buffer_objs.parent->fields.buffer_objs.num_subbuffers;
       clReleaseMemObject(mem->fields.buffer_objs.parent);
     } else {
+      if (is_image(mem)) {
+        if (mem->fields.image_objs.image_format != NULL) {
+          acl_free(mem->fields.image_objs.image_format);
+        }
+        if (mem->fields.image_objs.image_desc != NULL) {
+          if (mem->fields.image_objs.image_desc->buffer != NULL) {
+            clReleaseMemObject(mem->fields.image_objs.image_desc->buffer);
+            mem->fields.image_objs.image_desc->buffer = NULL;
+          }
+          if (mem->fields.image_objs.image_desc->mem_object != NULL) {
+            clReleaseMemObject(mem->fields.image_objs.image_desc->mem_object);
+            mem->fields.image_objs.image_desc->mem_object = NULL;
+          }
+          acl_free(mem->fields.image_objs.image_desc);
+        }
+      }
       // The only case wehre mem->region->is_user_provided && mem->host_mem.raw
       // != NULL is when user creates a buffer with CL_MEM_USE_HOST_PTR set and
       // the pointer is allocated with clSVMAlloc.