Add an extra exclamation point to indicate that code is VERY IMPORTANT

This broke any waterbox core that called in to native code in the same EnterExit() right after sealing.  All nyma cores were broken, 32x was not, didn't check the rest.  Regressed in 175556529e.

It worked fine in release mode, theoretically

waterbox/waterboxhost/src/host.rs

@@ -134,7 +134,7 @@ impl WaterboxHost {
 		self.elf.seal(&mut self.memory_block);
 		self.memory_block.seal()?;
 
-		if was_active {
+		if !was_active {
 			self.deactivate();
 		}
 		self.sealed = true;