do it before, and return false instead of going into a loop, so cli will work

src/main.cpp

@@ -2051,9 +2051,13 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
     const CChainParams& chainparams = Params();
     AssertLockHeld(cs_main);
 
-    int64_t FORK_HEIGHT = 235555;
-    // now = 232143
+    int64_t FORK_HEIGHT = 232173;
 
+    // hit the pause button
+    if(pindex->nHeight > FORK_HEIGHT) {
+        printf("Past fork height, sleepytime!\n");
+	return false;
+    }
     bool fExpensiveChecks = true;
     if (fCheckpointsEnabled) {
         CBlockIndex *pindexLastCheckpoint = Checkpoints::GetLastCheckpoint(chainparams.Checkpoints());
@@ -2063,13 +2067,6 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
         }
     }
 
-    // hit the pause button
-    if(pindex->nHeight == FORK_HEIGHT) {
-        while(1) {
-            sleep(1);
-        }
-    }
-
     auto verifier = libzcash::ProofVerifier::Strict();
     auto disabledVerifier = libzcash::ProofVerifier::Disabled();