Fix a linux waterbox-releated crash

Repro steps:
1) Load any waterbox core
2) Do anything that would trigger a NullReferenceException on C# side that you'd normally expect to be caught

waterbox/waterboxhost/src/memory_block/tripguard.rs

@@ -139,7 +139,6 @@ mod trip_pal {
 				} else {
 					transmute::<usize, SaHandler>(sa_old.sa_sigaction)(sig);
 				}
-				abort();
 			}
 		}
 		unsafe {