Revert to exit

src/cryptoconditions/src/secp256k1.c

@@ -68,7 +68,7 @@ void lockSign() {
     }
     if (!secp256k1_context_randomize(ec_ctx_sign, ent)) {
         fprintf(stderr, "Could not randomize secp256k1 context\n");
-        StartShutdown();
+        exit(-1);
     }
 }