Refactor: RPC: Separate GetBlockChecked() from getblock()

This does not change functionality

src/rpc/blockchain.cpp

@@ -737,6 +737,25 @@ static UniValue getblockheader(const JSONRPCRequest& request)
     return blockheaderToJSON(pblockindex);
 }
 
+static CBlock GetBlockChecked(const CBlockIndex* pblockindex)
+{
+    CBlock block;
+    if (fHavePruned && !(pblockindex->nStatus & BLOCK_HAVE_DATA) && pblockindex->nTx > 0) {
+        throw JSONRPCError(RPC_MISC_ERROR, "Block not available (pruned data)");
+    }
+
+    if (!ReadBlockFromDisk(block, pblockindex, Params().GetConsensus())) {
+        // Block not found on disk. This could be because we have the block
+        // header in our index but don't have the block (for example if a
+        // non-whitelisted node sends us an unrequested long chain of valid
+        // blocks, we add the headers to our index, but don't accept the
+        // block).
+        throw JSONRPCError(RPC_MISC_ERROR, "Block not found on disk");
+    }
+
+    return block;
+}
+
 static UniValue getblock(const JSONRPCRequest& request)
 {
     if (request.fHelp || request.params.size() < 1 || request.params.size() > 2)
@@ -805,17 +824,7 @@ static UniValue getblock(const JSONRPCRequest& request)
         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
     }
 
-    CBlock block;
-    if (fHavePruned && !(pblockindex->nStatus & BLOCK_HAVE_DATA) && pblockindex->nTx > 0)
-        throw JSONRPCError(RPC_MISC_ERROR, "Block not available (pruned data)");
-
-    if (!ReadBlockFromDisk(block, pblockindex, Params().GetConsensus()))
-        // Block not found on disk. This could be because we have the block
-        // header in our index but don't have the block (for example if a
-        // non-whitelisted node sends us an unrequested long chain of valid
-        // blocks, we add the headers to our index, but don't accept the
-        // block).
-        throw JSONRPCError(RPC_MISC_ERROR, "Block not found on disk");
+    const CBlock block = GetBlockChecked(pblockindex);
 
     if (verbosity <= 0)
     {