Fixed coverity issue in acl_mem.cpp: Memory leak

Author: haoxian2

src/acl_mem.cpp

@@ -4169,6 +4169,7 @@ ACL_EXPORT CL_API_ENTRY cl_int CL_API_CALL clEnqueueMigrateMemObjectsIntelFPGA(
             num_mem_objects * sizeof(acl_mem_migrate_wrapper_t));
 
     if (!new_src_mem_list) {
+      free(needs_release_on_fail);
       return CL_OUT_OF_RESOURCES;
     }
 
@@ -4179,6 +4180,7 @@ ACL_EXPORT CL_API_ENTRY cl_int CL_API_CALL clEnqueueMigrateMemObjectsIntelFPGA(
             num_mem_objects * sizeof(acl_mem_migrate_wrapper_t));
 
     if (!local_event->cmd.info.memory_migration.src_mem_list) {
+      free(needs_release_on_fail);
       return CL_OUT_OF_RESOURCES;
     }
   }