Fix GeneralizationStage (#561)

* fmt

* Fix generalization

fuzzers/libafl_atheris/src/lib.rs

@@ -21,7 +21,7 @@ use libafl::{
         tuples::{tuple_list, Merge},
         AsSlice,
     },
-    corpus::{Corpus, OnDiskCorpus},
+    corpus::{Corpus, InMemoryCorpus, OnDiskCorpus},
     events::EventConfig,
     executors::{inprocess::InProcessExecutor, ExitKind, TimeoutExecutor},
     feedback_or,
@@ -33,7 +33,7 @@ use libafl::{
     mutators::scheduled::{havoc_mutations, tokens_mutations, StdScheduledMutator},
     mutators::token_mutations::{I2SRandReplace, Tokens},
     observers::{HitcountsMapObserver, StdMapObserver, TimeObserver},
-    schedulers::{IndexesLenTimeMinimizerScheduler, PowerQueueScheduler},
+    schedulers::{IndexesLenTimeMinimizerScheduler, QueueScheduler},
     stages::{StdMutationalStage, TracingStage},
     state::{HasCorpus, HasMetadata, StdState},
     Error,

libafl/src/stages/generalization.rs

@@ -500,6 +500,7 @@ where
                     start = end;
                 }
                 end -= 1;
+                index += 1;
             }
         }