Merge bitcoin/bitcoin#26012: fuzz: Avoid timeout in bitdeque fuzz target

fa4ba04 fuzz: Remove no-op call to get() (MacroFake)
fa64228 fuzz: Avoid timeout in bitdeque fuzz target (MacroFake)

Pull request description:

  I'd guess that any bug should be discoverable within `10` ops. However, `900` seems also better than no limit at all, which causes timeouts such as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50892

ACKs for top commit:
  sipa:
    ACK fa4ba04

Tree-SHA512: f6bd25e78d5f04c6f88e9300c2fa3d0993a0911cb0fd1b414077adc0edde1a06ad72af5e2f50f0ab1324f91999ae57d879686c545b2e6c19ae7f637a8804bd48

Author: fanquake

src/test/fuzz/bitdeque.cpp

@@ -2,11 +2,10 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include <util/bitdeque.h>
-
 #include <random.h>
 #include <test/fuzz/FuzzedDataProvider.h>
 #include <test/fuzz/util.h>
+#include <util/bitdeque.h>
 
 #include <deque>
 #include <vector>
@@ -54,7 +53,8 @@ FUZZ_TARGET_INIT(bitdeque, InitRandData)
         --initlen;
     }
 
-    while (provider.remaining_bytes()) {
+    LIMITED_WHILE(provider.remaining_bytes() > 0, 900)
+    {
         {
             assert(deq.size() == bitdeq.size());
             auto it = deq.begin();
@@ -538,5 +538,4 @@ FUZZ_TARGET_INIT(bitdeque, InitRandData)
             }
         );
     }
-
 }

src/test/fuzz/pow.cpp

@@ -114,7 +114,7 @@ FUZZ_TARGET_INIT(pow_transition, initialize_pow)
         auto current_block{std::make_unique<CBlockIndex>(header)};
         current_block->pprev = blocks.empty() ? nullptr : blocks.back().get();
         current_block->nHeight = height;
-        blocks.emplace_back(std::move(current_block)).get();
+        blocks.emplace_back(std::move(current_block));
     }
     auto last_block{blocks.back().get()};
     unsigned int new_nbits{GetNextWorkRequired(last_block, nullptr, consensus_params)};