when acquiring results in an error, the resource should be reset to avoid a crash on delete

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25748 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/device_manager/io_resources.cpp

@@ -89,6 +89,7 @@ io_resource_private::Acquire(const io_resource& resource)
 			// This range is already covered by someone else
 			// TODO: we might want to ignore resources that belong to
 			// a node that isn't used.
+			_Init();
 			return B_RESOURCE_UNAVAILABLE;
 		}
 	}