clean up stale error checks and panics

delete unused functions
a few comments

1 files changed, 1 insertions, 1 deletions

diff --git a/defs.h b/defs.h
index 1e41dba..fd154ac 100644
--- a/defs.h
+++ b/defs.h
@@ -16,7 +16,7 @@ struct jmpbuf;
 void setupsegs(struct proc *);
 struct proc * copyproc(struct proc*);
 struct spinlock;
-char *growproc(int);
+int growproc(int);
 void sleep(void *, struct spinlock *);
 void wakeup(void *);
 void scheduler(void);