Fix lint

Author: pitrou

cpp/src/arrow/memory_pool_test.cc

@@ -293,11 +293,12 @@ TEST(Jemalloc, GetAllocationStats) {
 
 class TestCappedMemoryPool : public ::arrow::TestMemoryPoolBase {
  public:
-  MemoryPool* memory_pool() override { return InitPool(/*limit=*/ 1'000'000'000LL); }
+  MemoryPool* memory_pool() override { return InitPool(/*limit=*/1'000'000'000LL); }
 
   MemoryPool* InitPool(int64_t limit) {
     proxy_memory_pool_ = std::make_shared<ProxyMemoryPool>(default_memory_pool());
-    capped_memory_pool_ = std::make_shared<CappedMemoryPool>(proxy_memory_pool_.get(), limit);
+    capped_memory_pool_ =
+        std::make_shared<CappedMemoryPool>(proxy_memory_pool_.get(), limit);
     return capped_memory_pool_.get();
   }
 
@@ -319,7 +320,7 @@ TEST_F(TestCappedMemoryPool, Reallocate) { this->TestReallocate(); }
 TEST_F(TestCappedMemoryPool, Alignment) { this->TestAlignment(); }
 
 TEST_F(TestCappedMemoryPool, AllocateLimit) {
-  auto pool = InitPool(/*limit=*/ 1000);
+  auto pool = InitPool(/*limit=*/1000);
 
   uint8_t* data1;
   uint8_t* data2;
@@ -355,7 +356,7 @@ TEST_F(TestCappedMemoryPool, AllocateLimit) {
 }
 
 TEST_F(TestCappedMemoryPool, ReallocateLimit) {
-  auto pool = InitPool(/*limit=*/ 1000);
+  auto pool = InitPool(/*limit=*/1000);
 
   uint8_t* data1;
   uint8_t* data2;