scripted-diff: [test] Use g_rng/m_rng directly

-BEGIN VERIFY SCRIPT-

 # Use m_rng in unit test files
 ren() { sed -i "s:\<$1\>:$2:g" $( git grep -l "$1" src/test/*.cpp src/wallet/test/*.cpp src/test/util/setup_common.cpp ) ; }
 ren InsecureRand32                m_rng.rand32
 ren InsecureRand256               m_rng.rand256
 ren InsecureRandBits              m_rng.randbits
 ren InsecureRandRange             m_rng.randrange
 ren InsecureRandBool              m_rng.randbool
 ren g_insecure_rand_ctx           m_rng
 ren g_insecure_rand_ctx_temp_path g_rng_temp_path

-END VERIFY SCRIPT-

src/test/pool_tests.cpp

@@ -129,17 +129,17 @@ BOOST_AUTO_TEST_CASE(random_allocations)
     std::vector<PtrSizeAlignment> ptr_size_alignment{};
     for (size_t i = 0; i < 1000; ++i) {
         // make it a bit more likely to allocate than deallocate
-        if (ptr_size_alignment.empty() || 0 != InsecureRandRange(4)) {
+        if (ptr_size_alignment.empty() || 0 != m_rng.randrange(4)) {
             // allocate a random item
-            std::size_t alignment = std::size_t{1} << InsecureRandRange(8);          // 1, 2, ..., 128
-            std::size_t size = (InsecureRandRange(200) / alignment + 1) * alignment; // multiple of alignment
+            std::size_t alignment = std::size_t{1} << m_rng.randrange(8);          // 1, 2, ..., 128
+            std::size_t size = (m_rng.randrange(200) / alignment + 1) * alignment; // multiple of alignment
             void* ptr = resource.Allocate(size, alignment);
             BOOST_TEST(ptr != nullptr);
             BOOST_TEST((reinterpret_cast<uintptr_t>(ptr) & (alignment - 1)) == 0);
             ptr_size_alignment.push_back({ptr, size, alignment});
         } else {
             // deallocate a random item
-            auto& x = ptr_size_alignment[InsecureRandRange(ptr_size_alignment.size())];
+            auto& x = ptr_size_alignment[m_rng.randrange(ptr_size_alignment.size())];
             resource.Deallocate(x.ptr, x.bytes, x.alignment);
             x = ptr_size_alignment.back();
             ptr_size_alignment.pop_back();