Fix another presubmit error in heap.cc

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index 96c27a9eb650f625b39cad1836aa0b338d97b209..5198ab53e3cce3764c524944c029b2e77c233b07 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -2382,7 +2382,7 @@ bool Heap::CreateInitialMaps() {
   set_meta_map(new_meta_map);
   new_meta_map->set_map(new_meta_map);
 
-  { // Partial map allocation
+  {  // Partial map allocation
 #define ALLOCATE_PARTIAL_MAP(instance_type, size, field_name)                  \
     { Map* map;                                                                \
       if (!AllocatePartialMap((instance_type), (size)).To(&map)) return false; \
@@ -2476,7 +2476,7 @@ bool Heap::CreateInitialMaps() {
   constant_pool_array_map()->set_prototype(null_value());
   constant_pool_array_map()->set_constructor(null_value());
 
-  { // Map allocation
+  {  // Map allocation
 #define ALLOCATE_MAP(instance_type, size, field_name)                          \
     { Map* map;                                                                \
       if (!AllocateMap((instance_type), size).To(&map)) return false;          \