only do paranoid scans in malloc when debug is on
only do paranoid scans in malloc when debug is on

bradylee/nautilus_fs,yhx189/nautilus,yhx189/nautilus,haiyang1992/NautilusVirtio,haiyang1992/NautilusVirtio,haiyang1992/NautilusVirtio,yhx189/nautilus,bradylee/nautilus_fs,bradylee/nautilus_fs