Allow hush-cli stop to be run during RPC warmup, thanks to @zancas for the idea

src/rpc/server.cpp

@@ -858,20 +858,25 @@ std::string JSONRPCExecBatch(const UniValue& vReq)
 
 UniValue CRPCTable::execute(const std::string &strMethod, const UniValue &params) const
 {
+    // Find method
+    const CRPCCommand *pcmd = tableRPC[strMethod];
+    if (!pcmd)
+        throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found");
+
     // Return immediately if in warmup
     {
         LOCK(cs_rpcWarmup);
-        if (fRPCInWarmup)
-            throw JSONRPCError(RPC_IN_WARMUP, rpcWarmupStatus);
+        if (fRPCInWarmup) {
+            // hush-cli stop is the only valid RPC command during warmup
+            // We don't know if we have valid blocks or wallet yet, nothing else is safe
+            if (pcmd->name != "stop") {
+                throw JSONRPCError(RPC_IN_WARMUP, rpcWarmupStatus);
+            }
+        }
     }
 
     //printf("RPC call: %s\n", strMethod.c_str());
 
-    // Find method
-    const CRPCCommand *pcmd = tableRPC[strMethod];
-    if (!pcmd)
-        throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found");
-
     g_rpcSignals.PreCommand(*pcmd);
 
     try