Fix perror_exit_raw.

Some things are worse when you remove the 'p'.
diff --git a/lib/lib.c b/lib/lib.c
index c4191d6..3e41c63 100644
--- a/lib/lib.c
+++ b/lib/lib.c
@@ -98,7 +98,7 @@
 
 void perror_exit_raw(char *msg)
 {
-  error_exit("%s", msg);
+  perror_exit("%s", msg);
 }
 
 // Keep reading until full or EOF